Open Text (OTEX) 10-Q 9 May 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Mar. 31, 2018	May 04, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	OPEN TEXT CORP
Entity Central Index Key	1,002,638
Current Fiscal Year End Date	--06-30
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Trading Symbol	otex
Amendment Flag	false
Entity Common Stock, Shares Outstanding		267,469,077

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
ASSETS
Cash and cash equivalents	$ 605,497	$ 443,357
Accounts receivable trade, net of allowance for doubtful accounts of $9,007 as of March 31, 2018 and $6,319 as of June 30, 2017 (note 3)	515,012	445,812
Income taxes recoverable (note 14)	42,880	32,683
Prepaid expenses and other current assets	105,657	81,625
Total current assets	1,269,046	1,003,477
Property and equipment (note 4)	264,859	227,418
Goodwill (note 5)	3,592,598	3,416,749
Acquired intangible assets (note 6)	1,391,413	1,472,542
Deferred tax assets (note 14)	1,142,385	1,215,712
Other assets (note 7)	99,732	93,763
Deferred charges (note 8)	39,148	42,344
Long-term income taxes recoverable (note 14)	21,696	8,557
Total assets	7,820,877	7,480,562
Current liabilities:
Accounts payable and accrued liabilities (note 9)	295,165	342,120
Current portion of long-term debt (note 10)	282,760	182,760
Deferred revenues	689,189	570,328
Income taxes payable (note 14)	33,685	31,835
Total current liabilities	1,300,799	1,127,043
Long-term liabilities:
Accrued liabilities (note 9)	52,688	50,338
Deferred credits (note 8)	3,366	5,283
Pension liability (note 11)	62,996	58,627
Long-term debt (note 10)	2,385,322	2,387,057
Deferred revenues	72,176	61,678
Long-term income taxes payable (note 14)	171,174	162,493
Deferred tax liabilities (note 14)	75,376	94,724
Total long-term liabilities	2,823,098	2,820,200
Shareholders’ equity:
Share capital and additional paid-in capital (note 12) 267,266,442 and 264,059,567 Common Shares issued and outstanding at March 31, 2018 and June 30, 2017, respectively; authorized Common Shares: unlimited	1,689,997	1,613,454
Accumulated other comprehensive income	51,810	48,800
Retained earnings	1,973,129	1,897,624
Treasury stock, at cost (694,169 shares at March 31, 2018 and 1,101,612 at June 30, 2017, respectively)	(18,823)	(27,520)
Total OpenText shareholders' equity	3,696,113	3,532,358
Non-controlling interests	867	961
Total shareholders’ equity	3,696,980	3,533,319
Total liabilities and shareholders’ equity	$ 7,820,877	$ 7,480,562

CONDENSED CONSOLIDATED BALANCE3

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Statement of Financial Position [Abstract]
Accounts receivable trade, allowance for doubtful accounts	$ 9,007	$ 6,319
Common shares issued (in shares)	267,266,442	264,059,567
Common shares outstanding (in shares)	267,226,442	264,059,567
Treasury stock (in shares)	694,169	1,101,612

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Revenues:
License	$ 84,113	$ 87,227	$ 297,588	$ 245,647
Cloud services and subscriptions	209,102	177,109	611,076	521,857
Customer support	312,279	263,436	915,753	693,298
Professional service and other	80,385	65,358	236,554	166,701
Total revenues	685,879	593,130	2,060,971	1,627,503
Cost of revenues:
License	3,098	4,008	10,645	10,244
Cloud services and subscriptions	94,264	77,225	269,012	220,667
Customer support	33,820	34,442	99,805	87,529
Professional service and other	64,246	55,529	188,690	137,167
Amortization of acquired technology-based intangible assets (note 6)	47,303	39,285	138,391	87,268
Total cost of revenues	242,731	210,489	706,543	542,875
Gross profit	443,148	382,641	1,354,428	1,084,628
Operating expenses:
Research and development	83,522	77,086	241,455	200,379
Sales and marketing	129,987	117,498	381,951	315,297
General and administrative	54,817	44,828	152,717	122,939
Depreciation	23,093	16,557	64,042	47,128
Amortization of acquired customer-based intangible assets (note 6)	46,762	40,825	136,819	108,248
Special charges (recoveries) (note 17)	2,644	20,586	21,390	44,157
Total operating expenses	340,825	317,380	998,374	838,148
Income from operations	102,323	65,261	356,054	246,480
Other income (expense), net	11,140	1,424	26,911	4,565
Interest and other related expense, net	(34,534)	(31,734)	(101,914)	(86,752)
Income before income taxes	78,929	34,951	281,051	164,293
Provision for (recovery of) income taxes (note 14)	20,129	13,239	100,644	(815,364)
Net income for the period	58,800	21,712	180,407	979,657
Net (income) loss attributable to non-controlling interests	(6)	(96)	94	(135)
Net income attributable to OpenText	$ 58,794	$ 21,616	$ 180,501	$ 979,522
Earnings per share—basic attributable to OpenText (note 20) (in dollars per share)	$ 0.22	$ 0.08	$ 0.68	$ 3.91
Earnings per share—diluted attributable to OpenText (note 20) (in dollars per share)	$ 0.22	$ 0.08	$ 0.68	$ 3.88
Weighted average number of Common Shares outstanding—basic (in '000's) (in shares)	266,572	263,329	265,619	250,538
Weighted average number of Common Shares outstanding—diluted (in '000's) (in shares)	267,764	265,440	266,954	252,469
Dividends declared per Common Share (in dollars per share)	$ 0.132000	$ 0.115000	$ 0.396	$ 0.345000

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income for the period	$ 58,800	$ 21,712	$ 180,407	$ 979,657
Other comprehensive income (loss)—net of tax:
Net foreign currency translation adjustments	3,823	2,725	3,283	(7,582)
Unrealized gain (loss) on cash flow hedges:
Unrealized gain (loss) - net of tax expense (recovery) effect of ($338) and $125 for the three months ended March 31, 2018 and 2017, respectively; $65 and ($254) for the nine months ended March 31, 2018 and 2017, respectively	(935)	348	182	(705)
(Gain) loss reclassified into net income - net of tax (expense) recovery effect of ($112) and $14 for the three months ended March 31, 2018 and 2017, respectively; ($540) and ($24) for the nine months ended March 31, 2018 and 2017, respectively	(311)	40	(1,499)	(68)
Actuarial gain (loss) relating to defined benefit pension plans:
Actuarial gain (loss) - net of tax expense (recovery) effect of $413 and ($64) for the three months ended March 31, 2018 and 2017, respectively; $177 and $420 for the nine months ended March 31, 2018 and 2017, respectively	1,648	686	1,485	5,047
Amortization of actuarial (gain) loss into net income - net of tax (expense) recovery effect of $45 and $59 for the three months ended March 31, 2018 and 2017, respectively; $130 and $178 for the nine months ended March 31, 2018 and 2017, respectively	64	139	176	420
Unrealized net gain (loss) on marketable securities - net of tax effect of nil for the three and nine months ended March 31, 2018 and 2017, respectively	0	(541)	0	(141)
Release of unrealized gain on marketable securities - net of tax effect of nil for the three and nine months ended March 31, 2018 and 2017, respectively	0	0	(617)	0
Total other comprehensive income (loss) net, for the period	4,289	3,397	3,010	(3,029)
Total comprehensive income	63,089	25,109	183,417	976,628
Comprehensive (income) loss attributable to non-controlling interests	(6)	(96)	94	(135)
Total comprehensive income attributable to OpenText	$ 63,083	$ 25,013	$ 183,511	$ 976,493

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Unrealized gain (loss) on cash flow hedges, tax expense (recovery)	$ (338,000)	$ 125,000	$ 65,000	$ (254,000)
(Gain) loss reclassified into net income, tax (expense) recovery	(112,000)	14,000	(540,000)	(24,000)
Actuarial gain (loss), tax expense (recovery)	413,000	(64,000)	177,000	420,000
Amortization of actuarial (gain) loss into net income, tax (expense) recovery	45,000	59,000	130,000	178,000
Unrealized net gain (loss) on marketable securities, tax effect	0	0	0	0
Release of unrealized gain on marketable securities, tax effect	$ 0	$ 0	$ 0	$ 0

CONDENSED CONSOLIDATED STATEME7

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income for the period	$ 180,407	$ 979,657
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of intangible assets	339,252	242,644
Share-based compensation expense	20,473	22,373
Excess tax (benefits) expense on share-based compensation expense	0	(1,586)
Pension expense	2,834	2,953
Amortization of debt issuance costs	3,835	3,781
Amortization of deferred charges and credits	3,175	6,438
Loss on sale and write down of property and equipment	489	0
Release of unrealized gain on marketable securities to income	(841)	0
Write off of unamortized debt issuance costs	0	833
Deferred taxes	62,640	(890,244)
Share in net (income) loss of equity investees	503	(6,153)
Other non-cash charges	0	1,033
Changes in operating assets and liabilities:
Accounts receivable	(55,698)	(37,095)
Prepaid expenses and other current assets	(10,535)	(6,234)
Income taxes and deferred charges and credits	(22,068)	1,570
Accounts payable and accrued liabilities	(92,278)	16,521
Deferred revenue	74,704	6,917
Other assets	(2,466)	(6,635)
Net cash provided by operating activities	504,426	336,773
Cash flows from investing activities:
Additions of property and equipment	(83,038)	(50,071)
Proceeds from maturity of short-term investments	0	9,212
Other investing activities	(11,179)	(3,013)
Net cash used in investing activities	(415,237)	(2,158,519)
Cash flows from financing activities:
Excess tax benefits (expense) on share-based compensation expense	0	1,586
Proceeds from long-term debt and Revolver	200,000	481,875
Proceeds from issuance of Common Shares from exercise of stock options and ESPP	66,064	26,668
Proceeds from issuance of Common Shares under the public Equity Offering	0	604,223
Repayment of long-term debt and Revolver	(105,820)	(5,940)
Debt issuance costs	0	(6,200)
Equity issuance costs	0	(19,472)
Purchase of Treasury Stock	0	(4,245)
Payments of dividends to shareholders	(104,996)	(85,953)
Net cash provided by (used in) financing activities	55,248	992,542
Foreign exchange gain (loss) on cash held in foreign currencies	17,703	(5,553)
Increase (decrease) in cash and cash equivalents during the period	162,140	(834,757)
Cash and cash equivalents at beginning of the period	443,357	1,283,757
Cash and cash equivalents at end of the period	605,497	449,000
Hightail, Inc
Cash flows from investing activities:
Purchase of business, net of cash acquired	(20,466)	0
Guidance Software Inc.
Cash flows from investing activities:
Purchase of business, net of cash acquired	(229,275)	0
Covisint Corporation
Cash flows from investing activities:
Purchase of business, net of cash acquired	(71,279)	0
ECD Business
Cash flows from investing activities:
Purchase of business, net of cash acquired	0	(1,622,394)
HP Inc. CCM Business
Cash flows from investing activities:
Purchase of business, net of cash acquired	0	(315,000)
Recommind Inc
Cash flows from investing activities:
Purchase of business, net of cash acquired	0	(170,107)
Acquisitions completed prior to Fiscal 2017
Cash flows from investing activities:
Purchase of business, net of cash acquired	$ 0	$ (7,146)

Basis of Presentation

Basis of Presentation	9 Months Ended
	Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION The accompanying Condensed Consolidated Financial Statements include the accounts of Open Text Corporation and our subsidiaries, collectively referred to as "OpenText" or the "Company". We wholly own all of our subsidiaries with the exception of Open Text South Africa Proprietary Ltd. (OT South Africa), GXS, Inc. (GXS Korea) and EC1 Pte. Ltd. (GXS Singapore), which as of March 31, 2018 , were 70% , 85% and 81% owned, respectively, by OpenText. All inter-company balances and transactions have been eliminated. Throughout this Quarterly Report on Form 10-Q: (i) the term “Fiscal 2018” means our fiscal year beginning on July 1, 2017 and ending June 30, 2018; (ii) the term “Fiscal 2017” means our fiscal year beginning on July 1, 2016 and ended June 30, 2017; (iii) the term “Fiscal 2016” means our fiscal year beginning on July 1, 2015 and ended June 30, 2016; (iv) the term "Fiscal 2015" means our fiscal year beginning on July 1, 2014 and ended June 30, 2015; (v) the term "Fiscal 2014" means our fiscal year beginning on July 1, 2013 and ended June 30, 2014; (vi) the term "Fiscal 2013" means our fiscal year beginning July 1, 2012 and ended June 30, 2013; and (vii) the term "Fiscal 2012" means our fiscal year beginning July 1, 2011 and ended June 30, 2012. These Condensed Consolidated Financial Statements are expressed in U.S. dollars and are prepared in accordance with United States generally accepted accounting principles (U.S. GAAP). The information furnished reflects all adjustments necessary for a fair presentation of the results for the periods presented and includes the financial results of Covisint Corporation (Covisint), with effect from July 26, 2017, Guidance Software, Inc. (Guidance), with effect from September 14, 2017, and Hightail, Inc. (Hightail), with effect from February 14, 2018 (see note 18 "Acquisitions"). Use of estimates The preparation of financial statements in conformity with U.S. GAAP requires us to make estimates, judgments and assumptions that affect the amounts reported in the Condensed Consolidated Financial Statements . These estimates, judgments and assumptions are evaluated on an ongoing basis. We base our estimates on historical experience and on various other assumptions that we believe are reasonable at that time, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from those estimates. In particular, significant estimates, judgments and assumptions include those related to: (i) revenue recognition, (ii) testing of goodwill for impairment, (iii) the valuation of acquired intangible assets, (iv) the valuation of long-lived assets, (v) the recognition of contingencies, (vi) restructuring accruals, (vii) acquisition accruals and pre-acquisition contingencies, (viii) the realization of investment tax credits, (ix) the valuation of stock options granted and obligations related to share-based payments, including the valuation of our long-term incentive plans, (x) the valuation of pension assets and obligations, and (xi) accounting for income taxes. Beginning in the second quarter of Fiscal 2018, our income tax estimates were impacted by an Act to provide for the reconciliation pursuant to titles II and IV of the concurrent resolution on the budget for fiscal year 2018, informally titled the Tax Cuts and Jobs Act, which was enacted in the United States on December 22, 2017. The Company has recorded a provisional charge and continues to assess the effect of the new law on its consolidated financial statements in accordance with Staff Accounting Bulletin 118 “Income Tax Accounting Implications of the Tax Cuts and Jobs Act” (SAB 118). For more details related to this matter, please refer to note 14 "Income Taxes".

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
RECENT ACCOUNTING PRONOUNCEMENTS	RECENT ACCOUNTING PRONOUNCEMENTS Leases In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-02 “Leases (Topic 842)” (ASU 2016-02), which supersedes the guidance in former Accounting Standards Codification (ASC) Topic 840 “Leases”. The most significant change will result in the recognition of lease assets for the right to use the underlying asset and lease liabilities for the obligation to make lease payments by lessees, for those leases classified as operating leases under current guidance. The new guidance will also require significant additional disclosures about the amount, timing and uncertainty of cash flows related to leases. This standard is effective for us for our fiscal year ending June 30, 2020, with early adoption permitted. Upon adoption of ASU 2016-02, entities are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. We have formed a sub-committee consisting of internal members from various departments to assess the effect that the pending adoption of ASU 2016-02 will have on our Condensed Consolidated Balance Sheets. Although the sub-committee has not completed their assessment, we expect the majority of the impact to come from our facility leases, and that most of our operating lease commitments will be recognized as right of use assets and operating lease liabilities, which will increase our total assets and total liabilities, as reported on our Condensed Consolidated Balance Sheets, relative to such amounts prior to adoption. The sub-committee continues to evaluate the impact of the new standard on our Condensed Consolidated Financial Statements. Revenue Recognition In May 2014, the FASB issued ASC 606 "Revenue from Contracts with Customers" (Topic 606). Topic 606 supersedes the revenue recognition requirements in ASC Topic 605, "Revenue Recognition" (Topic 605) and nearly all other existing revenue recognition guidance under U.S. GAAP. The core principal of Topic 606 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services and permits the use of the retrospective or cumulative effect transition method. Topic 606 identifies five steps to be followed to achieve its core principal, which include (i) identifying contract(s) with customers, (ii) identifying performance obligations in the contract(s), (iii) determining the transaction price, (iv) allocating the transaction price to the performance obligations in the contract(s) and (v) recognizing revenue when (or as) the entity satisfies a performance obligation. We will be adopting Topic 606 using the cumulative effect approach when this guidance becomes effective for us, starting in the first quarter of our fiscal year ending June 30, 2019. While we are continuing to assess all potential impacts of Topic 606, we currently believe the key differences relate to our accounting for implementation services on cloud arrangements, accounting for on premise subscription offerings and costs to obtain a contract. Implementation Services on Cloud Arrangements Under Topic 605, fees charged for professional services to implement hosted software within a cloud arrangement are deferred and recognized ratably over the longer of the non-cancellable contract term or the estimated customer life because the activities are not deemed to be a separate element for which stand-alone value exists. Under Topic 606, we expect such professional services revenues to be more variable from period to period, as we will be required to accelerate the recognition of revenues allocated to the implementation services, based on the stand alone selling price that meet the criteria of being distinct and recognize them as the services are provided to the customer. Any implementation services that do not meet the criteria of being distinct will be deferred and amortized over the contract term. Costs relating to distinct implementation services will be expensed as they are incurred. On Premise Subscription Arrangements Under Topic 605, revenue attributable to on premise subscription arrangements is recognized under “Cloud Services and Subscriptions revenue” and is recognized ratably over the term of the arrangement because Vendor Specific Objective Evidence (VSOE) does not exist for the undelivered maintenance and support element of the arrangement, as it is not sold separately. Under Topic 606, the requirement to have VSOE for undelivered elements to enable the separation of the delivered software licenses from the on-going customer support and maintenance services is eliminated. Accordingly, we expect the adoption of Topic 606 will result in a change in our recording of on premise subscription revenues from “Cloud Services and Subscriptions revenues” to “License” and “Customer Support” revenues in our Consolidated Statements of Income. Further, we expect to accelerate the recognition of a portion of the transaction price at the outset of the arrangement (upon delivery) as “License revenue”, using the residual approach for estimating stand-alone selling price. Over the course of the service period, “Customer Support revenues” will be recognized based on the stand-alone selling price for those services. Costs to obtain a contract The accounting for the recognition of costs related to obtaining customer contracts under Topic 606 is not significantly different from our current policy to defer commissions, although there will be certain modifications to reflect the changes in the pattern and timing of recognition of certain arrangements as discussed above. We will be evaluating revenue contracts that were in effect on the adoption date as if they had been accounted for under Topic 606 from contract inception. As a result, certain revenue that would have been recognized in future periods under Topic 605 will now be accounted for and disclosed under Topic 606 as though the revenue had already been recognized in prior periods, resulting in us having to make a cumulative effect adjustment to our retained earnings in the first period of adoption. We are still in the process of reviewing these adjustments, finalizing our assessment and quantifying the impacts of Topic 606 and the methodology of estimating standalone selling price for certain of the separately identified performance obligations under the new revenue recognition standard. Certain contracts are complex, and actual determination of revenue recognition under both existing and new guidance is dependent on contract-specific terms, which may cause variability in the timing and quantum of revenue recognized. We will continue to assess all of the impacts that the application of Topic 606 will have on our Condensed Consolidated Financial Statements, including on our disclosure requirements, and, if material, will provide updated disclosures with regard to the expected impact. ASUs adopted in Fiscal 2018 During Fiscal 2018 we adopted the following ASU, which did not have a material impact to our reported financial position, results of operations or cash flows: • ASU 2016-09 "Compensation-Stock Compensation (Topic 718)"

Allowance For Doubtful Accounts

Allowance For Doubtful Accounts	9 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
ALLOWANCE FOR DOUBTFUL ACCOUNTS	ALLOWANCE FOR DOUBTFUL ACCOUNTS Balance as of June 30, 2017 $ 6,319 Bad debt expense 6,561 Write-off /adjustments (3,873 ) Balance as of March 31, 2018 $ 9,007 Included in accounts receivable are unbilled receivables in the amount of $58.2 million as of March 31, 2018 ( June 30, 2017 — $46.2 million ).

Property and Equipment

Property and Equipment	9 Months Ended
	Mar. 31, 2018
Property, Plant and Equipment [Abstract]
PROPERTY AND EQUIPMENT	PROPERTY AND EQUIPMENT As of March 31, 2018 Cost Accumulated Depreciation Net Furniture and fixtures $ 30,433 $ (16,501 ) $ 13,932 Office equipment 1,445 (716 ) 729 Computer hardware 198,432 (126,397 ) 72,035 Computer software 82,791 (44,767 ) 38,024 Capitalized software development costs 77,592 (38,163 ) 39,429 Leasehold improvements 113,171 (49,824 ) 63,347 Land and buildings 48,484 (11,121 ) 37,363 Total $ 552,348 $ (287,489 ) $ 264,859 As of June 30, 2017 Cost Accumulated Depreciation Net Furniture and fixtures $ 23,026 $ (14,879 ) $ 8,147 Office equipment 1,245 (597 ) 648 Computer hardware 164,268 (104,572 ) 59,696 Computer software 72,835 (33,862 ) 38,973 Capitalized software development costs 67,092 (28,430 ) 38,662 Leasehold improvements 81,564 (38,642 ) 42,922 Land and buildings 48,431 (10,061 ) 38,370 Total $ 458,461 $ (231,043 ) $ 227,418

Goodwill

Goodwill	9 Months Ended
	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL	GOODWILL Goodwill is recorded when the consideration paid for an acquisition of a business exceeds the fair value of identifiable net tangible and intangible assets. The following table summarizes the changes in goodwill since June 30, 2017: Balance as of June 30, 2017 $ 3,416,749 Acquisition of Hightail (note 18) 7,127 Acquisition of Guidance (note 18) 130,334 Acquisition of Covisint (note 18) 26,905 Adjustments relating to acquisitions prior to Fiscal 2018 that had open measurement periods (note 18) (1,458 ) Adjustments on account of foreign exchange 12,941 Balance as of March 31, 2018 $ 3,592,598

Acquired Intangible Assets

Acquired Intangible Assets	9 Months Ended
	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
ACQUIRED INTANGIBLE ASSETS	ACQUIRED INTANGIBLE ASSETS As of March 31, 2018 Cost Accumulated Amortization Net Technology assets $ 985,226 $ (392,297 ) $ 592,929 Customer assets 1,348,510 (550,026 ) 798,484 Total $ 2,333,736 $ (942,323 ) $ 1,391,413 As of June 30, 2017 Cost Accumulated Amortization Net Technology assets $ 930,841 $ (272,872 ) $ 657,969 Customer assets 1,230,806 (416,233 ) 814,573 Total $ 2,161,647 $ (689,105 ) $ 1,472,542 The above balances as of March 31, 2018 have been reduced to reflect the impact of intangible assets relating to acquisitions where the gross cost has become fully amortized during the nine months ended March 31, 2018 . The impact of this resulted in a reduction of $19.0 million related to Technology assets and $3.0 million related to Customer assets. The weighted average amortization periods for acquired technology and customer intangible assets are approximately six years and eight years, respectively. The following table shows the estimated future amortization expense for the fiscal years indicated. This calculation assumes no future adjustments to acquired intangible assets: Fiscal years ending June 30, 2018 (three months ended June 30) $ 94,776 2019 352,401 2020 280,888 2021 190,763 2022 177,208 2023 and beyond 295,377 Total $ 1,391,413

Other Assets

Other Assets	9 Months Ended
	Mar. 31, 2018
Other Assets, Noncurrent Disclosure [Abstract]
OTHER ASSETS	OTHER ASSETS As of March 31, 2018 As of June 30, 2017 Deposits and restricted cash $ 11,479 $ 15,821 Deferred implementation costs 28,916 28,833 Investments 36,776 27,886 Marketable securities — 3,023 Long-term prepaid expenses and other long-term assets 22,561 18,200 Total $ 99,732 $ 93,763 Deposits and restricted cash primarily relate to security deposits provided to landlords in accordance with facility lease agreements and cash restricted per the terms of certain contractual-based agreements. Deferred implementation costs relate to deferred direct and relevant costs on implementation of long-term contracts, to the extent such costs can be recovered through guaranteed contract revenues. Investments relate to certain non-marketable equity securities in which we are a limited partner. Our interest, individually, in each of these investees range from 4% to below 20% . These investments are accounted for using the equity method. Our share of net income or losses based on our interest in these investments is recorded as a component of other income (expense), net in our Condensed Consolidated Statements of Income . During the three and nine months ended March 31, 2018 , our share of income (loss) from these investments was $(0.3) million and $(0.5) million , respectively ( three and nine months ended March 31, 2017 — $0.2 million and $6.2 million , respectively). Marketable securities are classified as available for sale securities and are recorded on our Condensed Consolidated Balance Sheets at fair value with unrealized gains and losses reported as a separate component of Accumulated other comprehensive income. We did no t hold any marketable securities as of March 31, 2018 . Long-term prepaid expenses and other long-term assets includes advance payments on long-term licenses that are being amortized over the applicable terms of the licenses and other miscellaneous assets.

Deferred Charges and Credits

Deferred Charges and Credits	9 Months Ended
	Mar. 31, 2018
Deferred Costs [Abstract]
DEFERRED CHARGES AND CREDITS	DEFERRED CHARGES AND CREDITS Deferred charges and credits relate to cash taxes payable and the elimination of deferred tax balances relating to legal entity consolidations completed as part of internal reorganizations of our international subsidiaries. Deferred charges and credits are amortized to income tax expense over periods of 6 to 15 years.

Accounts Payable and Accrued Li

Accounts Payable and Accrued Liabilities	9 Months Ended
	Mar. 31, 2018
Accounts Payable and Accrued Liabilities [Abstract]
ACCOUNTS PAYABLE AND ACCRUED LIABILITIES	ACCOUNTS PAYABLE AND ACCRUED LIABILITIES Current liabilities Accounts payable and accrued liabilities are comprised of the following: As of March 31, 2018 As of June 30, 2017 Accounts payable—trade $ 39,283 $ 43,699 Accrued salaries and commissions 103,245 121,958 Accrued liabilities 118,628 135,512 Accrued interest on Senior Notes 26,021 24,787 Amounts payable in respect of restructuring and other Special charges 5,000 13,728 Asset retirement obligations 2,988 2,436 Total $ 295,165 $ 342,120 Long-term accrued liabilities As of March 31, 2018 As of June 30, 2017 Amounts payable in respect of restructuring and other Special charges $ 2,124 $ 2,686 Other accrued liabilities* 37,164 36,702 Asset retirement obligations 13,400 10,950 Total $ 52,688 $ 50,338 * Other accrued liabilities consist primarily of tenant allowances, deferred rent and lease fair value adjustments relating to certain facilities acquired through business acquisitions. Asset retirement obligations We are required to return certain of our leased facilities to their original state at the conclusion of our lease. As of March 31, 2018 , the present value of this obligation was $16.4 million ( June 30, 2017 — $13.4 million ), with an undiscounted value of $18.5 million ( June 30, 2017 — $15.0 million ).

Long-Term Debt

Long-Term Debt	9 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
LONG-TERM DEBT	LONG-TERM DEBT Long-term debt Long-term debt is comprised of the following: As of March 31, 2018 As of June 30, 2017 Total debt Senior Notes 2026 $ 850,000 $ 850,000 Senior Notes 2023 800,000 800,000 Term Loan B 766,300 772,120 Revolver 275,000 175,000 Total principal payments due 2,691,300 2,597,120 Premium on Senior Notes 2026 6,164 6,597 Debt issuance costs (29,382 ) (33,900 ) Total amount outstanding 2,668,082 2,569,817 Less: Current portion of long-term debt Term Loan B 7,760 7,760 Revolver 275,000 175,000 Total current portion of long-term debt 282,760 182,760 Non-current portion of long-term debt $ 2,385,322 $ 2,387,057 Senior Unsecured Fixed Rate Notes Senior Notes 2026 On May 31, 2016, we issued $600 million in aggregate principal amount of 5.875% Senior Notes due 2026 (Senior Notes 2026) in an unregistered offering to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (Securities Act), and to certain persons in offshore transactions pursuant to Regulation S under the Securities Act. Senior Notes 2026 bear interest at a rate of 5.875% per annum, payable semi-annually in arrears on June 1 and December 1, commencing on December 1, 2016. Senior Notes 2026 will mature on June 1, 2026, unless earlier redeemed, in accordance with their terms, or repurchased. On December 20, 2016, we issued an additional $250 million in aggregate principal amount by reopening our Senior Notes 2026 at an issue price of 102.75% . The additional notes have identical terms, are fungible with and are a part of a single series with the previously issued $600 million aggregate principal amount of Senior Notes 2026. The outstanding aggregate principal amount of Senior Notes 2026, after taking into consideration the additional issuance, is $850 million . For the three and nine months ended March 31, 2018 , we recorded interest expense of $12.5 million and $37.5 million , respectively, relating to Senior Notes 2026 ( three and nine months ended March 31, 2017 — $12.5 million and $30.7 million , respectively). Senior Notes 2023 On January 15, 2015, we issued $800 million in aggregate principal amount of 5.625% Senior Notes due 2023 (Senior Notes 2023 and together with Senior Notes 2026, Senior Notes) in an unregistered offering to qualified institutional buyers pursuant to Rule 144A under the Securities Act, and to certain persons in offshore transactions pursuant to Regulation S under the Securities Act. Senior Notes 2023 bear interest at a rate of 5.625% per annum, payable semi-annually in arrears on January 15 and July 15, commencing on July 15, 2015. Senior Notes 2023 will mature on January 15, 2023, unless earlier redeemed, in accordance with their terms, or repurchased. For the three and nine months ended March 31, 2018 , we recorded interest expense of $11.2 million and $33.7 million , respectively, relating to Senior Notes 2023 ( three and nine months ended March 31, 2017 — $11.2 million and $33.7 million , respectively). Term Loan B We entered into a $800 million term loan facility (Term Loan B) and borrowed the full amount on January 16, 2014. Borrowings under Term Loan B are secured by a first charge over substantially all of our assets on a pari passu basis with the Revolver (defined below). Term Loan B has a seven year term and repayments made under Term Loan B are equal to 0.25% of the principal amount in equal quarterly installments for the life of Term Loan B, with the remainder due at maturity. Borrowings under Term Loan B currently bear a floating rate of interest equal to 2.0% plus LIBOR. As of March 31, 2018 , the outstanding balance on the Term Loan B bears an interest rate of approximately 3.65% . For the three and nine months ended March 31, 2018 , we recorded interest expense of $6.9 million and $19.7 million , respectively, relating to Term Loan B ( three and nine months ended March 31, 2017 — $6.0 million and $19.0 million , respectively). Revolver We currently have a $450 million committed revolving credit facility (the Revolver) which matures on May 5, 2022. Borrowings under the Revolver are secured by a first charge over substantially all of our assets, on a pari passu basis with Term Loan B. The Revolver has no fixed repayment date prior to the end of the term. Borrowings under the Revolver bear interest per annum at a floating rate of LIBOR plus a fixed margin dependent on our consolidated net leverage ratio ranging from 1.25% to 1.75% . As of March 31, 2018 , the outstanding balance on the Revolver bears a weighted average interest rate of approximately 3.55% . During the three and nine months ended March 31, 2018 , we drew down nil and $200 million , respectively, from the Revolver partially to finance acquisitions ( three and nine months ended March 31, 2017 — $225 million , respectively). During the three and nine months ended March 31, 2018 , we repaid $100 million , respectively ( three and nine months ended March 31, 2017 — nil , respectively). As of March 31, 2018 we have an outstanding balance on the Revolver of $275 million . For the three and nine months ended March 31, 2018 , we recorded interest expense of $2.7 million and $7.3 million , respectively, relating to amounts drawn on the Revolver ( three and nine months ended March 31, 2017 — $1.3 million , respectively). Debt Issuance Costs and Premium on Senior Notes Debt issuance costs relate primarily to costs incurred for the purpose of obtaining our credit facilities and issuing our Senior Notes and are being amortized over the respective terms of the Senior Notes and Term Loan B using the effective interest method and the Revolver using the straight-line method. The premium on Senior Notes 2026 represents the excess of the proceeds received over the face value of Senior Notes 2026. This premium is amortized as a reduction to interest expense over the term of Senior Notes 2026 using the effective interest method.

Pension Plans and Other Post Re

Pension Plans and Other Post Retirement Benefits	9 Months Ended
	Mar. 31, 2018
Retirement Benefits [Abstract]
PENSION PLANS AND OTHER POST RETIREMENT BENEFITS	PENSION PLANS AND OTHER POST RETIREMENT BENEFITS The following table provides details of our defined benefit pension plans and long-term employee benefit obligations for Open Text Document Technologies GmbH (CDT), GXS GmbH ( GXS GER ), GXS Philippines, Inc. ( GXS PHP ) and other plans as of March 31, 2018 and June 30, 2017 : As of March 31, 2018 Total benefit obligation Current portion of benefit obligation* Non-current portion of benefit obligation CDT defined benefit plan $ 31,700 $ 688 $ 31,012 GXS Germany defined benefit plan 25,873 1,035 24,838 GXS Philippines defined benefit plan 3,801 102 3,699 Other plans 3,624 177 3,447 Total $ 64,998 $ 2,002 $ 62,996 As of June 30, 2017 Total benefit obligation Current portion of benefit obligation* Non-current portion of benefit obligation CDT defined benefit plan $ 28,881 $ 583 $ 28,298 GXS Germany defined benefit plan 23,730 926 22,804 GXS Philippines defined benefit plan 4,495 81 4,414 Other plans 3,256 145 3,111 Total $ 60,362 $ 1,735 $ 58,627 * The current portion of the benefit obligation has been included within "Accrued salaries and commissions", all within "Accounts payable and accrued liabilities" in the Condensed Consolidated Balance Sheets (see note 9 "Accounts Payable and Accrued Liabilities"). Defined Benefit Plans CDT Plan CDT sponsors an unfunded defined benefit pension plan covering substantially all CDT employees (CDT pension plan) which provides for old age, disability and survivors’ benefits. Benefits under the CDT pension plan are generally based on age at retirement, years of service and the employee’s annual earnings. The net periodic cost of this pension plan is determined using the projected unit credit method and several actuarial assumptions, the most significant of which are the discount rate and estimated service costs. No contributions have been made since the inception of the plan. Actuarial gains or losses in excess of 10% of the projected benefit obligation are being amortized and recognized as a component of net periodic benefit costs over the average remaining service period of the plan's active employees. As of March 31, 2018 , there is approximately $0.1 million in accumulated other comprehensive income related to the CDT pension plan that is expected to be recognized as a component of net periodic benefit costs over the remainder of Fiscal 2018. GXS Germany Plan As part of our acquisition of GXS Group, Inc. (GXS) in Fiscal 2014, we assumed an unfunded defined benefit pension plan covering certain German employees which provides for old age, disability and survivors' benefits. The GXS GER plan has been closed to new participants since 2006. Benefits under the GXS GER plan are generally based on a participant’s remuneration, date of hire, years of eligible service and age at retirement. The net periodic cost of this pension plan is determined using the projected unit credit method and several actuarial assumptions, the most significant of which are the discount rate and estimated service costs. No contributions have been made since the inception of the plan. Actuarial gains or losses in excess of 10% of the projected benefit obligation are being amortized and recognized as a component of net periodic benefit costs over the average remaining service period of the plan’s active employees. As of March 31, 2018 , there is approximately $19 thousand in accumulated other comprehensive income related to the GXS GER plan that is expected to be recognized as a component of net periodic benefit costs over the remainder of Fiscal 2018. GXS Philippines Plan As part of our acquisition of GXS in Fiscal 2014, we assumed a primarily unfunded defined benefit pension plan covering substantially all of the GXS Philippines employees which provides for retirement, disability and survivors' benefits. Benefits under the GXS PHP plan are generally based on a participant’s remuneration, years of eligible service and age at retirement. The net periodic cost of this pension plan is determined using the projected unit credit method and several actuarial assumptions, the most significant of which are the discount rate and estimated service costs. Aside from an initial contribution which has a fair value of approximately $32 thousand as of March 31, 2018 , no additional contributions have been made since the inception of the plan. Actuarial gains or losses in excess of 10% of the projected benefit obligation are being amortized and recognized as a component of net periodic benefit costs over the average remaining service period of the plan’s active employees. As of March 31, 2018 , there is approximately $59 thousand in accumulated other comprehensive income related to the GXS PHP plan that is expected to be recognized as a component of net periodic benefit costs over the remainder of Fiscal 2018. The following are the details of the change in the benefit obligation for each of the above mentioned pension plans for the periods indicated: As of March 31, 2018 As of June 30, 2017 CDT GXS GER GXS PHP Total CDT GXS GER GXS PHP Total Benefit obligation—beginning of period $ 28,881 $ 23,730 $ 4,495 $ 57,106 $ 29,450 $ 24,729 $ 7,341 $ 61,520 Service cost 379 357 657 1,393 467 395 1,051 1,913 Interest cost 459 370 176 1,005 456 377 226 1,059 Benefits paid (428 ) (736 ) (82 ) (1,246 ) (469 ) (807 ) (53 ) (1,329 ) Actuarial (gain) loss (327 ) (96 ) (1,269 ) (1,692 ) (1,708 ) (1,548 ) (3,728 ) (6,984 ) Foreign exchange (gain) loss 2,736 2,248 (176 ) 4,808 685 584 (342 ) 927 Benefit obligation—end of period 31,700 25,873 3,801 61,374 28,881 23,730 4,495 57,106 Less: Current portion (688 ) (1,035 ) (102 ) (1,825 ) (583 ) (926 ) (81 ) (1,590 ) Non-current portion of benefit obligation $ 31,012 $ 24,838 $ 3,699 $ 59,549 $ 28,298 $ 22,804 $ 4,414 $ 55,516 The following are details of net pension expense relating to the following pension plans: Three Months Ended March 31, 2018 2017 Pension expense: CDT GXS GER GXS PHP Total CDT GXS GER GXS PHP Total Service cost $ 130 $ 123 $ 210 $ 463 $ 115 $ 97 $ 196 $ 408 Interest cost 158 127 62 347 113 93 51 257 Amortization of actuarial (gains) and losses 141 19 (59 ) 101 155 42 (12 ) 185 Net pension expense $ 429 $ 269 $ 213 $ 911 $ 383 $ 232 $ 235 $ 850 Nine Months Ended March 31, 2018 2017 Pension expense: CDT GXS GER GXS PHP Total CDT GXS GER GXS PHP Total Service cost $ 379 $ 357 $ 657 $ 1,393 $ 347 $ 292 $ 838 $ 1,477 Interest cost 459 370 176 1,005 339 279 172 790 Amortization of actuarial (gains) and losses 409 55 (182 ) 282 465 125 (36 ) 554 Net pension expense $ 1,247 $ 782 $ 651 $ 2,680 $ 1,151 $ 696 $ 974 $ 2,821 In determining the fair value of the pension plan benefit obligations as of March 31, 2018 and June 30, 2017 , respectively, we used the following weighted-average key assumptions: As of March 31, 2018 As of June 30, 2017 CDT GXS GER GXS PHP CDT GXS GER GXS PHP Assumptions: Salary increases 2.00% 2.00% 6.20% 2.00% 2.00% 6.20% Pension increases 1.75% 2.00% N/A 1.75% 2.00% N/A Discount rate 2.05% 2.05% 7.00% 2.00% 2.00% 5.00% Normal retirement age 65 65-67 60 65 65-67 60 Employee fluctuation rate: to age 20 —% —% 12.19% —% —% 12.19% to age 25 —% —% 16.58% —% —% 16.58% to age 30 1.00% —% 13.97% 1.00% —% 13.97% to age 35 0.50% —% 10.77% 0.50% —% 10.77% to age 40 —% —% 7.39% —% —% 7.39% to age 45 0.50% —% 3.28% 0.50% —% 3.28% to age 50 0.50% —% —% 0.50% —% —% from age 51 1.00% —% —% 1.00% —% —% Anticipated pension payments under the pension plans for the fiscal years indicated below are as follows: Fiscal years ending June 30, CDT GXS GER GXS PHP 2018 (three months ended June 30) $ 159 $ 253 $ 25 2019 706 1,042 115 2020 760 1,050 154 2021 858 1,095 194 2022 945 1,106 297 2023 to 2027 5,912 5,895 2,056 Total $ 9,340 $ 10,441 $ 2,841 Other Plans Other plans include defined benefit pension plans that are offered by certain of our foreign subsidiaries. Many of these plans were assumed through our acquisitions or are required by local regulatory requirements. These other plans are primarily unfunded, with the aggregate projected benefit obligation included in our pension liability. The net periodic costs of these plans are determined using the projected unit credit method and several actuarial assumptions, the most significant of which are the discount rate and estimated service costs.

Share Capital, Option Plans and

Share Capital, Option Plans and Share-Based Payments	9 Months Ended
	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
SHARE CAPITAL, OPTION PLANS AND SHARE-BASED PAYMENTS	SHARE CAPITAL, OPTION PLANS AND SHARE-BASED PAYMENTS Cash Dividends For the three and nine months ended March 31, 2018 , pursuant to the Company’s dividend policy, we declared total non-cumulative dividends of $0.1320 and $0.3960 , respectively, per Common Share in the aggregate amount of $35.2 million and $105.0 million , respectively, which we paid during the same period. For the three and nine months ended March 31, 2017 , pursuant to the Company’s dividend policy, we paid total non-cumulative dividends of $0.1150 and $0.3450 , respectively, per Common Share in the aggregate amount of $30.3 million and $86.0 million , respectively. Share Capital Our authorized share capital includes an unlimited number of Common Shares and an unlimited number of Preference Shares. No Preference Shares have been issued. Treasury Stock Repurchase During the three and nine months ended March 31, 2018 , we did no t repurchase any of our Common Shares for potential reissuance under our Long-Term Incentive Plans (LTIP) or other plans ( three and nine months ended March 31, 2017 — 123,785 Common Shares, respectively, in the amount of $4.2 million , respectively). See below for more details on our various plans. From time to time we may provide funds to an independent agent to facilitate repurchases of our Common Shares in connection with the settlement of awards under the LTIP or other plans. Reissuance During the three and nine months ended March 31, 2018 , we reissued 20,000 and 407,443 Common Shares, respectively, from treasury stock ( three and nine months ended March 31, 2017 — 44,000 and 393,922 Common Shares, respectively), in connection with the settlement of awards. Share-Based Payments Total share-based compensation expense for the periods indicated below is detailed as follows: Three Months Ended March 31, Nine Months Ended March 31, 2018 2017 2018 2017 Stock options $ 983 $ 2,365 $ 7,014 $ 9,040 Performance Share Units (issued under LTIP) 751 926 2,723 2,754 Restricted Share Units (issued under LTIP) 1,588 1,573 4,987 4,940 Restricted Share Units (other) 146 534 823 2,029 Deferred Share Units (directors) 701 558 2,193 1,899 Employee Share Purchase Plan 911 705 2,733 1,711 Total share-based compensation expense $ 5,080 $ 6,661 $ 20,473 $ 22,373 Summary of Outstanding Stock Options As of March 31, 2018 , an aggregate of 6,846,680 options to purchase Common Shares were outstanding and an additional 11,311,338 options to purchase Common Shares were available for issuance under our stock option plans. Our stock options generally vest over four years and expire between seven and ten years from the date of the grant. Currently we also have options outstanding that vest over five years , as well as options outstanding that vest based on meeting certain market conditions. The exercise price of all our options is set at an amount that is not less than the closing price of our Common Shares on the NASDAQ on the trading day immediately preceding the applicable grant date. A summary of activity under our stock option plans for the nine months ended March 31, 2018 is as follows: Options Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term (years) Aggregate Intrinsic Value ($’000s) Outstanding at June 30, 2017 8,977,830 $ 24.57 Granted 848,830 34.55 Exercised (2,683,814 ) 18.68 Forfeited or expired (296,166 ) 30.48 Outstanding at March 31, 2018 6,846,680 $ 27.86 4.48 $ 47,591 Exercisable at March 31, 2018 2,303,668 $ 23.91 3.22 $ 25,095 We estimate the fair value of stock options using the Black-Scholes option-pricing model or, where appropriate, the Monte Carlo Valuation Method, consistent with the provisions of ASC Topic 718, "Compensation—Stock Compensation" (Topic 718) and SEC Staff Accounting Bulletin No. 107. The option-pricing models require input of subjective assumptions, including the estimated life of the option and the expected volatility of the underlying stock over the estimated life of the option. We use historical volatility as a basis for projecting the expected volatility of the underlying stock and estimate the expected life of our stock options based upon historical data. We believe that the valuation techniques and the approach utilized to develop the underlying assumptions are appropriate in calculating the fair value of our stock option grants. Estimates of fair value are not intended, however, to predict actual future events or the value ultimately realized by employees who receive equity awards. For the periods indicated, the weighted-average fair value of options and weighted-average assumptions were as follows: Three Months Ended March 31, Nine Months Ended March 31, 2018 2017 2018 2017 Weighted–average fair value of options granted $ 8.14 $ 7.32 $ 7.48 $ 6.86 Weighted-average assumptions used: Expected volatility 26.95 % 27.64 % 27.10 % 28.61 % Risk–free interest rate 2.44 % 1.70 % 1.83 % 1.32 % Expected dividend yield 1.45 % 1.37 % 1.45 % 1.42 % Expected life (in years) 4.33 4.34 4.42 4.33 Forfeiture rate (based on historical rates) 6 % 5 % 6 % 5 % Average exercise share price $ 36.50 $ 33.48 $ 34.55 $ 31.34 As of March 31, 2018 , the total compensation cost related to the unvested stock option awards not yet recognized was approximately $18.5 million , which will be recognized over a weighted-average period of approximately 2.4 years . No cash was used by us to settle equity instruments granted under share-based compensation arrangements in any of the periods presented. We have no t capitalized any share-based compensation costs as part of the cost of an asset in any of the periods presented. For the three and nine months ended March 31, 2018 , cash in the amount of $30.5 million and $50.1 million , respectively, was received as the result of the exercise of options granted under share-based payment arrangements. The tax benefit realized by us during the three and nine months ended March 31, 2018 from the exercise of options eligible for a tax deduction was $0.6 million and $0.9 million , respectively. For the three and nine months ended March 31, 2017 , cash in the amount of $12.2 million and $16.7 million , respectively, was received as the result of the exercise of options granted under share-based payment arrangements. The tax benefit realized by us during the three and nine months ended March 31, 2017 from the exercise of options eligible for a tax deduction was $1.5 million and $1.9 million , respectively. Long-Term Incentive Plans We incentivize our executive officers, in part, with long-term compensation pursuant to our LTIP. The LTIP is a rolling three year program that grants eligible employees a certain number of target Performance Share Units (PSUs) and/or Restricted Share Units (RSUs). Target PSUs become vested upon the achievement of certain financial and/or operational performance criteria (the Performance Conditions) that are determined at the time of the grant. Target RSUs become vested when an eligible employee remains employed throughout the vesting period. LTIP grants that have recently vested, or have yet to vest, are described below. LTIP grants are referred to in this Quarterly Report on Form 10-Q based upon the year in which the grants are expected to vest. Fiscal 2017 LTIP Grants made in Fiscal 2015 under the LTIP (collectively referred to as Fiscal 2017 LTIP), consisting of PSUs and RSUs, took effect in Fiscal 2015 starting on September 4, 2014. We settled the Fiscal 2017 LTIP by issuing 312,651 Common Shares from treasury stock during the three months ended December 31, 2017, with a cost of $6.7 million . Fiscal 2018 LTIP Grants made in Fiscal 2016 under the LTIP (collectively referred to as Fiscal 2018 LTIP), consisting of PSUs and RSUs, took effect in Fiscal 2016 starting on August 23, 2015. The Performance Conditions for vesting of the PSUs are based solely upon market conditions. The RSUs are employee service-based awards and vest over the life of the Fiscal 2018 LTIP. We expect to settle the Fiscal 2018 LTIP awards in stock. Fiscal 2019 LTIP Grants made in Fiscal 2017 under the LTIP (collectively referred to as Fiscal 2019 LTIP), consisting of PSUs and RSUs, took effect in Fiscal 2017 starting on August 14, 2016. The Performance Conditions for vesting of the PSUs are based solely upon market conditions. The RSUs are employee service-based awards and vest over the life of the Fiscal 2019 LTIP. We expect to settle the Fiscal 2019 LTIP awards in stock. Fiscal 2020 LTIP Grants made in Fiscal 2018 under the LTIP (collectively referred to as Fiscal 2020 LTIP), consisting of PSUs and RSUs, took effect in Fiscal 2018 starting on August 7, 2017. The Performance Conditions for vesting of the PSUs are based solely upon market conditions. The RSUs are employee service-based awards and vest over the life of the Fiscal 2020 LTIP. We expect to settle the Fiscal 2020 LTIP awards in stock. PSUs and RSUs granted under the LTIPs have been measured at fair value as of the effective date, consistent with Topic 718, and will be charged to share-based compensation expense over the remaining life of the plan. Stock options granted under the LTIPs have been measured using the Black-Scholes option-pricing model, consistent with Topic 718. We estimate the fair value of PSUs using the Monte Carlo pricing model and RSUs have been valued based upon their grant date fair value. As of March 31, 2018 , the total expected compensation cost related to the unvested LTIP awards not yet recognized was $15.2 million , which is expected to be recognized over a weighted average period of 1.9 years . Restricted Share Units (RSUs) During the three and nine months ended March 31, 2018 , we granted nil and 4,464 RSUs, respectively, to employees in accordance with employment and other agreements ( three and nine months ended March 31, 2017 — nil and 7,800 RSUs, respectively). The RSUs vest over a specified contract date, typically three years from the respective date of grants. We expect to settle the awards in stock. During the three and nine months ended March 31, 2018 , we issued 20,000 and 94,792 Common Shares, respectively, from treasury stock, with a cost of $0.4 million and $2.0 million , respectively, in connection with the settlement of these vested RSUs ( three and nine months ended March 31, 2017 — 44,000 and 54,000 Common Shares, respectively, with a cost of $1.0 million and $1.1 million , respectively). Deferred Stock Units (DSUs) During the three and nine months ended March 31, 2018 , we granted 3,037 and 83,846 DSUs, respectively, to certain non-employee directors ( three and nine months ended March 31, 2017 — 2,302 and 77,998 DSUs, respectively). The DSUs were issued under our Deferred Share Unit Plan. DSUs granted as compensation for director fees vest immediately, whereas all other DSUs granted vest at our next annual general meeting following the granting of the DSUs. No DSUs are payable by us until the director ceases to be a member of the Board. Employee Share Purchase Plan (ESPP) Our ESPP offers employees a purchase price discount of 15% . During the three and nine months ended March 31, 2018 , 201,726 and 540,343 Common Shares, respectively, were eligible for issuance to employees enrolled in the ESPP ( three and nine months ended March 31, 2017 — 129,579 and 349,435 Common Shares, respectively). During the three and nine months ended March 31, 2018 , cash in the amount of approximately $5.8 million and $15.9 million , respectively, was received from employees relating to the ESPP ( three and nine months ended March 31, 2017 — $3.8 million and $10.0 million , respectively).

Guarantees and Contingencies

Guarantees and Contingencies	9 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
GUARANTEES AND CONTINGENCIES	GUARANTEES AND CONTINGENCIES We have entered into the following contractual obligations with minimum payments for the indicated fiscal periods as follows: Payments due between Total April 1, 2018— July 1, 2018— July 1, 2020— July 1, 2022 Long-term debt obligations (1) $ 3,424,525 $ 186,654 $ 389,329 $ 953,792 $ 1,894,750 Operating lease obligations (2) 397,539 20,530 140,044 105,496 131,469 Purchase obligations 17,867 2,622 14,439 806 — $ 3,839,931 $ 209,806 $ 543,812 $ 1,060,094 $ 2,026,219 (1) Includes interest up to maturity and principal payments. We currently have borrowings outstanding under the Revolver ( $275 million as of March 31, 2018 ), which we expect to repay within the next 12 months. Please see note 10 "Long-Term Debt" for more details. (2) Net of $8.6 million of sublease income to be received from properties which we have subleased to third parties. Guarantees and Indemnifications We have entered into customer agreements which may include provisions to indemnify our customers against third party claims that our software products or services infringe certain third party intellectual property rights and for liabilities related to a breach of our confidentiality obligations. We have not made any material payments in relation to such indemnification provisions and have not accrued any liabilities related to these indemnification provisions in our Condensed Consolidated Financial Statements . Occasionally, we enter into financial guarantees with third parties in the ordinary course of our business, including, among others, guarantees relating to taxes and letters of credit on behalf of parties with whom we conduct business. Such agreements have not had a material effect on our results of operations, financial position or cash flows. Litigation We are currently involved in various claims and legal proceedings. Quarterly, we review the status of each significant legal matter and evaluate such matters to determine how they should be treated for accounting and disclosure purposes in accordance with the requirements of ASC Topic 450-20 "Loss Contingencies" (Topic 450-20). Specifically, this evaluation process includes the centralized tracking and itemization of the status of all our disputes and litigation items, discussing the nature of any litigation and claim, including any dispute or claim that is reasonably likely to result in litigation, with relevant internal and external counsel, and assessing the progress of each matter in light of its merits and our experience with similar proceedings under similar circumstances. If the potential loss from any claim or legal proceeding is considered probable and the amount can be reasonably estimated, we accrue a liability for the estimated loss in accordance with Topic 450-20. As of the date of this Quarterly Report on Form 10-Q , the aggregate of such estimated losses was not material to our consolidated financial position or result of operations and we do not believe as of the date of this filing that it is reasonably possible that a loss exceeding the amounts already recognized will be incurred that would be material to our consolidated financial position or results of operations. Contingencies IRS Matter As we have previously disclosed, the United States Internal Revenue Service (IRS) is examining certain of our tax returns for our fiscal year ended June 30, 2010 (Fiscal 2010) through our fiscal year ended June 30, 2012 (Fiscal 2012), and in connection with those examinations is reviewing our internal reorganization in Fiscal 2010 to consolidate certain intellectual property ownership in Luxembourg and Canada and our integration of certain acquisitions into the resulting structure. We also previously disclosed that the examinations may lead to proposed adjustments to our taxes that may be material, individually or in the aggregate, and that we have not recorded any material accruals for any such potential adjustments in our Condensed Consolidated Financial Statements . As part of these examinations, which remain ongoing, on July 17, 2015 we received from the IRS an initial Notice of Proposed Adjustment (NOPA) in draft form proposing a one-time approximately $280 million increase to our U.S. federal taxes arising from the reorganization in Fiscal 2010 and proposing penalties equal to 20% of the additional taxes, plus interest at the applicable statutory rate (which will continue to accrue until the matter is resolved and may be substantial). A NOPA is an IRS position and does not impose an obligation to pay tax. The draft NOPA may be changed before the final NOPA is issued, including because the IRS reserved the right in the draft NOPA to increase the adjustment. Based on discussions with the IRS, we expect we will receive an additional NOPA proposing an approximately $80 million increase to our U.S. federal taxes for Fiscal 2012 arising from the integration of Global 360 Holding Corp. into the structure that resulted from the reorganization, accompanied by proposed penalties and interest (although there can be no assurance that this will be the amount reflected in the NOPA when received, including because the IRS may assign a higher value to our intellectual property). Depending upon the outcome of these matters, additional state income taxes plus penalties and interest may be due. We currently estimate that, as of March 31, 2018 , adjustments under the draft NOPA in its present form and the anticipated additional NOPA could result in an aggregate liability of approximately $605 million , inclusive of U.S. federal and state taxes, penalties and interest. The increase from the initially disclosed estimated aggregate liability is solely due to an estimate of interest that has accrued. We strongly disagree with the IRS’ position and intend to vigorously contest the proposed adjustments to our taxable income. We are examining various alternatives available to taxpayers to contest the proposed adjustments. Any such alternatives could involve a lengthy process and result in the incurrence of significant expenses. As of the date of this Quarterly Report on Form 10-Q , we have not recorded any material accruals in respect of these examinations in our Condensed Consolidated Financial Statements . An adverse outcome of these tax examinations could have a material adverse effect on our financial position and results of operations. CRA Matter As part of its ongoing audit of our Canadian tax returns, the Canada Revenue Agency (CRA) has disputed our transfer pricing methodology used for certain intercompany transactions with our international subsidiaries. The CRA has issued a notice of reassessment for Fiscal 2012 that would, as drafted, increase our taxable income for that year by approximately $90 million (offset by the tax attributes referred to below) and apply a penalty of approximately 10% . We strongly disagree with the CRA position and believe the reassessment of Fiscal 2012 (including penalties) is without merit. We will continue to vigorously contest both the proposed adjustments to our taxable income and the penalty assessment. We have filed a notice of objection and will also seek competent authority consideration under applicable international treaties in respect of this reassessment. As of the date of this Quarterly Report on Form 10-Q , we have not recorded any accruals in respect of this reassessment in our Condensed Consolidated Financial Statements . Even if we are unsuccessful in challenging the CRA’s reassessment to increase our taxable income for Fiscal 2012, we have elective deductions available in Fiscal 2012 that would offset such increased amount so that no additional cash tax would be payable for Fiscal 2012, exclusive of any proposed penalties. Audits by the CRA of our tax returns for fiscal years prior to Fiscal 2012 have been completed with no reassessment of our income tax liability in respect of our international transactions, including the transfer pricing methodology applied to them. The CRA is currently auditing Fiscal 2013, Fiscal 2014 and Fiscal 2015, and has proposed to reassess Fiscal 2013 in a manner consistent with the reassessment of Fiscal 2012. We are in ongoing discussions with the CRA and continue to vigorously contest the CRA's audit position. GXS Brazil Matter As part of our acquisition of GXS, we inherited a tax dispute in Brazil between the Company’s subsidiary, GXS Tecnologia da Informação (Brasil) Ltda. (GXS Brazil), and the municipality of São Paulo, in connection with GXS Brazil’s judicial appeal of a tax claim. During the first quarter of Fiscal 2018 the courts ruled in favour of the municipality of São Paulo. The Company decided not to pursue further appeal. On October 1, 2017, the Company reached a settlement with the municipality and paid $1.4 million . Historically, prior to our acquisition of GXS, GXS would charge certain costs to its subsidiaries, including GXS Brazil, primarily based on historical transfer pricing studies that were intended to reflect the costs incurred by subsidiaries in relation to services provided by the parent company to the subject subsidiary. GXS recorded taxes on amounts billed, that were considered to be due based on the intercompany charges. GXS subsequently re-evaluated its intercompany charges to GXS Brazil and related taxes and, upon taking into consideration the current environment and judicial proceedings in Brazil, concluded that it was probable that certain indirect taxes would be assessable and payable based upon the accrual of such intercompany charges and has approximately $1.8 million accrued for the probable amount of a settlement related to the indirect taxes, interest and penalties. GXS India Matter Our Indian subsidiary, GXS India Technology Centre Private Limited (GXS India), is subject to potential assessments by Indian tax authorities in the city of Bangalore. GXS India has received assessment orders from the Indian tax authorities alleging that the transfer price applied to intercompany transactions was not appropriate. Based on advice from our tax advisors, we believe that the facts that the Indian tax authorities are using to support their assessment are incorrect. We have filed appeals and anticipate an eventual settlement with the Indian tax authorities. We have accrued $1.4 million to cover our anticipated financial exposure in this matter. Please also see Part II, Item 1A "Risk Factors" elsewhere in this Quarterly Report on Form 10-Q.

Income Taxes

Income Taxes	9 Months Ended
	Mar. 31, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES Our effective tax rate represents the net effect of the mix of income earned in various tax jurisdictions that are subject to a wide range of income tax rates. We recognize interest expense and penalties related to income tax matters in income tax expense. For the three and nine months ended March 31, 2018 and 2017 , we recognized the following amounts as income tax-related interest expense and penalties: Three Months Ended March 31, Nine Months Ended March 31, 2018 2017 2018 2017 Interest expense $ 18 $ 1,673 $ 3,915 $ 4,456 Penalties expense (recoveries) 453 6 (90 ) (318 ) Total $ 471 $ 1,679 $ 3,825 $ 4,138 The following amounts have been accrued on account of income tax-related interest expense and penalties: As of March 31, 2018 As of June 30, 2017 Interest expense accrued * $ 52,094 $ 47,402 Penalties accrued * $ 2,325 $ 2,160 * These balances have been included within "Long-term income taxes payable" within the Condensed Consolidated Balance Sheets . We believe that it is reasonably possible that the gross unrecognized tax benefits, as of March 31, 2018 , could decrease tax expense in the next 12 months by $7.5 million , relating primarily to the expiration of competent authority relief and tax years becoming statute barred for purposes of future tax examinations by local taxing jurisdictions. Our four most significant tax jurisdictions are Canada, the United States, Luxembourg and Germany. Our tax filings remain subject to audits by applicable tax authorities for a certain length of time following the tax year to which those filings relate. The earliest fiscal years open for examination are 2009 for Germany, 2010 for the United States, 2011 for Luxembourg, and 2012 for Canada. We are subject to tax audits in all major taxing jurisdictions in which we operate and currently have tax audits open in Canada, the United States, France, Germany, India, Malaysia, and the United Kingdom. On a quarterly basis we assess the status of these examinations and the potential for adverse outcomes to determine the adequacy of the provision for income and other taxes. Statements regarding the United States and Canada audits are included in note 13 "Guarantees and Contingencies". The timing of the resolution of income tax audits is highly uncertain, and the amounts ultimately paid, if any, upon resolution of the issues raised by the taxing authorities may differ from the amounts accrued. It is reasonably possible that within the next 12 months we will receive additional assessments by various tax authorities or possibly reach resolution of income tax audits in one or more jurisdictions. These assessments or settlements may or may not result in changes to our contingencies related to positions on tax filings. The actual amount of any change could vary significantly depending on the ultimate timing and nature of any settlements. We cannot currently provide an estimate of the range of possible outcomes. For more information relating to certain tax audits, please refer to note 13 "Guarantees and Contingencies". As at March 31, 2018 , we have provided $28.3 million ( June 30, 2017 — $22.1 million ) in respect of both additional foreign taxes or deferred income tax liabilities for temporary differences related to the undistributed earnings of certain non-United States subsidiaries, and planned periodic repatriations from certain United States and German subsidiaries, that will be subject to withholding taxes upon distribution. We have not provided for additional foreign withholding taxes or deferred income tax liabilities related to undistributed earnings of all other non-Canadian subsidiaries, since such earnings are considered permanently invested in those subsidiaries, or are not subject to withholding taxes. It is not practicable to reasonably estimate the amount of additional deferred income tax liabilities or foreign withholding taxes that may be payable should these earnings be distributed in the future. The effective tax rate decreased to a provision of 25.5% for the three months ended March 31, 2018 , from a provision of 37.9% for the three months ended March 31, 2017 . Tax expense increased by $6.9 million , primarily due to (i) the impact of changes in US tax legislation in Fiscal 2018 resulting in a provisional expense of $4.7 million (see below), (ii) an increase of $8.2 million on account of the Company having higher income before taxes, including the impact of foreign tax rates, and (iii) an increase of $1.4 million relating to differences in tax filings from provisions, offset by (i) a decrease of $5.7 million resulting from the net impact of reversals and accruals of reserves, and (ii) a decrease of $1.2 million relating to a decrease in amortization of deferred charges. The remainder of the difference was due to normal course movements and non-material items. The effective tax rate increased to a provision of 35.8% for the nine months ended March 31, 2018 , compared to a recovery of 496.3% for the nine months ended March 31, 2017 . The increase in tax expense of $916.0 million was primarily due to (i) a significant tax benefit of $876.1 million resulting from the Fiscal 2017 internal reorganization as described below which did not reoccur in Fiscal 2018, (ii) the impact of changes in US tax legislation in Fiscal 2018 resulting in a provisional charge of $20.0 million (see below), and (iii) an increase of $25.3 million on account of the Company having higher income before taxes, including the impact of foreign tax rates, offset by (i) a decrease of $0.5 million resulting from the net impact of reversals and accruals of reserves, (ii) a decrease of $1.2 million relating to differences in tax filings from provisions, and (iii) a decrease of $3.3 million relating to a decrease in amortization of deferred charges. The remainder of the difference was due to normal course movements and non-material items. In July 2016, we implemented a reorganization of our subsidiaries worldwide with the view to continuing to enhance operational and administrative efficiencies through further consolidated ownership, management, and development of our intellectual property (IP) in Canada, continuing to reduce the number of entities in our group and working towards our objective of having a single operating legal entity in each jurisdiction. A significant tax benefit of $876.1 million , associated primarily with the recognition of a net deferred tax asset arising from the entry of the IP into Canada, was recognized in the first quarter of Fiscal 2017. For more information relating to this, please refer to our Annual Report on Form 10-K for the year ended June 30, 2017. On December 22, 2017, the United States enacted tax reform legislation through the Tax Cuts and Jobs Act, which significantly changed the existing US tax laws, including a reduction in the federal corporate tax rate from 35% to 21% , and the transition of US international taxation from a worldwide tax system to a territorial tax system. As a result of the enactment of the legislation, the Company incurred a provisional one-time tax expense of $4.7 million for the three months ended March 31, 2018 and $20.0 million for the nine months ended March 31, 2018 , respectively, primarily related to the transition tax on accumulated foreign earnings and the re-measurement of certain deferred tax assets and liabilities. The portion of this anticipated increase to tax expense attributable to the transition tax is payable over a period of up to eight years . The impact of the $20.0 million adjustment resulting from the US legislation on the effective tax rate is an increase of 6.0% for the three months ended March 31, 2018 and an increase of 7.1% for the nine months ended March 31, 2018 . The $20.0 million is a provisional amount in respect of rate change, Alternative Minimum Tax (AMT), and foreign earnings in accordance with Staff Accounting Bulletin 118 “Income Tax Accounting Implications of the Tax Cuts and Jobs Act” (SAB 118). The finalization of the provisional one-time amount is pending finalization of the re-assessment of the timing of reversals of certain deferred tax assets and liabilities and additional considerations related to undistributed foreign earnings and evaluating whether any portion of our existing AMT credit carryforwards are not expected to be refundable as a result of the repeal of corporate AMT. Additional information such as final Fiscal 2018 income and detailed earnings and profits calculations for foreign subsidiaries may result in changes to the provisional amount during the SAB 118 measurement period. The Company continues to assess the impact of the new law on its consolidated financial statements and anticipates finalizing the determination on or before December 22, 2018 in accordance with SAB 118.

Fair Value Measurement

Fair Value Measurement	9 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENT	FAIR VALUE MEASUREMENT ASC Topic 820 “Fair Value Measurement” (Topic 820) defines fair value, establishes a framework for measuring fair value, and addresses disclosure requirements for fair value measurements. Fair value is the price that would be received upon sale of an asset or paid upon transfer of a liability in an orderly transaction between market participants at the measurement date and in the principal or most advantageous market for that asset or liability. The fair value, in this context, should be calculated based on assumptions that market participants would use in pricing the asset or liability, not on assumptions specific to the entity. In addition, the fair value of liabilities should include consideration of non-performance risk, including our own credit risk. In addition to defining fair value and addressing disclosure requirements, Topic 820 establishes a fair value hierarchy for valuation inputs. The hierarchy prioritizes the inputs into three levels based on the extent to which inputs used in measuring fair value are observable in the market. Each fair value measurement is reported in one of the three levels which are determined by the lowest level input that is significant to the fair value measurement in its entirety. These levels are: • Level 1—inputs are based upon unadjusted quoted prices for identical instruments traded in active markets. • Level 2—inputs are based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market or can be corroborated by observable market data for substantially the full term of the assets or liabilities. • Level 3—inputs are generally unobservable and typically reflect management’s estimates of assumptions that market participants would use in pricing the asset or liability. The fair values are therefore determined using model-based techniques that include option pricing models, discounted cash flow models, and similar techniques. Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis: Our financial assets and liabilities measured at fair value on a recurring basis consisted of the following types of instruments as of March 31, 2018 and June 30, 2017 : March 31, 2018 June 30, 2017 Fair Market Measurements using: Fair Market Measurements using: March 31, 2018 Quoted prices in active markets for identical assets/ (liabilities) Significant other observable inputs Significant unobservable inputs June 30, 2017 Quoted prices in active markets for identical assets/ (liabilities) Significant other observable inputs Significant unobservable inputs (Level 1) (Level 2) (Level 3) (Level 1) (Level 2) (Level 3) Financial Assets: Marketable securities N/A N/A N/A N/A $ 3,023 N/A $ 3,023 N/A Derivative financial instrument asset (note 16) — N/A — N/A 1,174 N/A 1,174 N/A $ — N/A $ — N/A $ 4,197 N/A $ 4,197 N/A Financial Liabilities: Derivative financial instrument liability (note 16) $ (618 ) N/A $ (618 ) N/A $ — N/A $ — N/A $ (618 ) N/A $ (618 ) N/A $ — N/A $ — N/A Our valuation techniques used to measure the fair values of the derivative instruments, the counterparty to which has high credit ratings, were derived from pricing models including discounted cash flow techniques, with all significant inputs derived from or corroborated by observable market data, as no quoted market prices exist for these instruments. Our discounted cash flow techniques use observable market inputs, such as, where applicable, foreign currency spot and forward rates. Our cash and cash equivalents, along with our accounts receivable and accounts payable and accrued liabilities balances, are measured and recognized in our Condensed Consolidated Financial Statements at an amount that approximates their fair value (a Level 2 measurement) due to their short maturities. If applicable, we will recognize transfers between levels within the fair value hierarchy at the end of the reporting period in which the actual event or change in circumstance occurs. During the three and nine months ended March 31, 2018 and 2017 , we did not have any transfers between Level 1, Level 2 or Level 3. Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis We measure certain assets and liabilities at fair value on a nonrecurring basis. These assets and liabilities are recognized at fair value when they are deemed to be other-than-temporarily impaired. During the three and nine months ended March 31, 2018 and 2017 , no indications of impairment were identified and therefore no fair value measurements were required. Marketable Securities Marketable securities are classified as available for sale securities and are recorded within "Other assets" on our Condensed Consolidated Balance Sheets at fair value with unrealized gains or losses reported as a separate component of Accumulated other comprehensive income. We did no t hold any marketable securities as of March 31, 2018 . A summary of our marketable securities outstanding as of March 31, 2018 and June 30, 2017 is as follows: As of March 31, 2018 As of June 30, 2017 Cost Gross Unrealized Gains Gross Unrealized (Losses) Estimated Fair Value Cost Gross Unrealized Gains Gross Unrealized (Losses) Estimated Fair Value Marketable securities N/A N/A N/A N/A $ 2,406 $ 617 $ — $ 3,023

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	9 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES	DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES Foreign Currency Forward Contracts We are engaged in hedging programs with various banks to limit the potential foreign exchange fluctuations incurred on future cash flows relating to a portion of our Canadian dollar payroll expenses. We operate internationally and are therefore exposed to foreign currency exchange rate fluctuations in the normal course of our business, in particular to changes in the Canadian dollar on account of large costs that are incurred from our centralized Canadian operations, which are denominated in Canadian dollars. As part of our risk management strategy, we use foreign currency forward contracts to hedge portions of our payroll exposure with typical maturities of between one and twelve months . We do not use derivatives for speculative purposes. We have designated these transactions as cash flow hedges of forecasted transactions under ASC Topic 815 “Derivatives and Hedging” (Topic 815). As the critical terms of the hedging instrument and of the entire hedged forecasted transaction are the same, in accordance with Topic 815, we have been able to conclude that changes in fair value or cash flows attributable to the risk being hedged are expected to completely offset at inception and on an ongoing basis. Accordingly, quarterly unrealized gains or losses on the effective portion of these forward contracts have been included within other comprehensive income. The fair value of the contracts, as of March 31, 2018 , is recorded within "Accounts payable and accrued liabilities”. As of March 31, 2018 , the notional amount of forward contracts we held to sell U.S. dollars in exchange for Canadian dollars was $47.3 million ( June 30, 2017 — $39.0 million ). Fair Value of Derivative Instruments and Effect of Derivative Instruments on Financial Performance The effect of these derivative instruments on our Condensed Consolidated Financial Statements for the periods indicated below were as follows (amounts presented do not include any income tax effects). Fair Value of Derivative Instruments in the Condensed Consolidated Balance Sheets (see note 15 "Fair Value Measurement") As of March 31, 2018 As of June 30, 2017 Derivatives Balance Sheet Location Fair Value Fair Value Foreign currency forward contracts designated as cash flow hedges Prepaid expenses and other current assets (Accounts payable and accrued liabilities) $ (618 ) $ 1,174 Effects of Derivative Instruments on Income and Other Comprehensive Income (OCI) Three and Nine Months Ended March 31, 2018 Derivatives in Cash Flow Hedging Relationship Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion) Location of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) Location of Gain or (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing) Amount of Gain or (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing) Three Months Ended March 31, 2018 Nine Months Ended March 31, 2018 Three Months Ended March 31, 2018 Nine Months Ended March 31, 2018 Three Months Ended March 31, 2018 Nine Months Ended March 31, 2018 Foreign currency forward contracts $ (1,273 ) $ 247 Operating $ 423 $ 2,039 N/A $ — $ — Three and Nine Months Ended March 31, 2017 Derivatives in Cash Flow Hedging Relationship Amount of Gain or (Loss) Location of Amount of Gain or Location of Amount of Gain or (Loss) Recognized in Three Months Ended March 31, 2017 Nine Months Ended March 31, 2017 Three Months Ended March 31, 2017 Nine Months Ended March 31, 2017 Three Months Ended March 31, 2017 Nine Months Ended March 31, 2017 Foreign currency forward contracts $ 473 $ (960 ) Operating $ (54 ) $ 92 N/A $ — $ —

Special Charges (Recoveries)

Special Charges (Recoveries)	9 Months Ended
	Mar. 31, 2018
Restructuring, Settlement and Impairment Provisions [Abstract]
SPECIAL CHARGES (RECOVERIES)	SPECIAL CHARGES (RECOVERIES) Special charges (recoveries) include costs and recoveries that relate to certain restructuring initiatives that we have undertaken from time to time under our various restructuring plans, as well as acquisition-related costs and other charges. Three Months Ended March 31, Nine Months Ended March 31, 2018 2017 2018 2017 Fiscal 2018 Restructuring Plan $ 553 $ — $ 8,907 $ — Fiscal 2017 Restructuring Plan 525 18,888 3,947 20,744 Restructuring Plans prior to Fiscal 2017 Restructuring Plan 4 (68 ) 260 (1,872 ) Acquisition-related costs 1,172 4,639 4,625 15,305 Other charges (recoveries) 390 (2,873 ) 3,651 9,980 Total $ 2,644 $ 20,586 $ 21,390 $ 44,157 Fiscal 2018 Restructuring Plan During Fiscal 2018 and in the context of our acquisitions of Covisint, Guidance and subsequently Hightail (each defined below), we began to implement restructuring activities to streamline our operations (collectively referred to as the Fiscal 2018 Restructuring Plan). The Fiscal 2018 Restructuring Plan charges relate to workforce reductions and facility consolidations. These charges require management to make certain judgments and estimates regarding the amount and timing of restructuring charges or recoveries. Our estimated liability could change subsequent to its recognition, requiring adjustments to the expense and the liability recorded. On a quarterly basis, we conduct an evaluation of the related liabilities and expenses and revise our assumptions and estimates as appropriate. As of March 31, 2018 , we expect total costs to be incurred in conjunction with the Fiscal 2018 Restructuring Plan to be approximately $12.0 million , of which $8.9 million has already been recorded within "Special charges (recoveries)" to date. A reconciliation of the beginning and ending liability for the nine months ended March 31, 2018 is shown below. Fiscal 2018 Restructuring Plan Workforce reduction Facility costs Total Balance payable as at June 30, 2017 $ — $ — $ — Accruals and adjustments 7,977 930 8,907 Cash payments (8,637 ) (187 ) (8,824 ) Foreign exchange and other non-cash adjustments 912 (85 ) 827 Balance payable as at March 31, 2018 $ 252 $ 658 $ 910 Fiscal 2017 Restructuring Plan During Fiscal 2017 and in the context of our acquisitions of Recommind, CCM Business and ECD Business (each as defined below), we began to implement restructuring activities to streamline our operations (collectively referred to as the Fiscal 2017 Restructuring Plan ). The Fiscal 2017 Restructuring Plan charges relate to workforce reductions and facility consolidations. These charges require management to make certain judgments and estimates regarding the amount and timing of restructuring charges or recoveries. Our estimated liability could change subsequent to its recognition, requiring adjustments to the expense and the liability recorded. On a quarterly basis, we conduct an evaluation of the related liabilities and expenses and revise our assumptions and estimates as appropriate. As of March 31, 2018 , we expect total costs to be incurred in conjunction with the Fiscal 2017 Restructuring Plan to be approximately $45.0 million , of which $37.5 million has already been recorded within "Special charges (recoveries)" to date. A reconciliation of the beginning and ending liability for the nine months ended March 31, 2018 is shown below. Fiscal 2017 Restructuring Plan Workforce reduction Facility costs Total Balance payable as at June 30, 2017 $ 10,045 $ 1,369 $ 11,414 Accruals and adjustments 3,371 576 3,947 Cash payments (12,068 ) (1,312 ) (13,380 ) Foreign exchange and other non-cash adjustments 590 (19 ) 571 Balance payable as at March 31, 2018 $ 1,938 $ 614 $ 2,552 Acquisition-related costs Included within "Special charges (recoveries)" for the three and nine months ended March 31, 2018 are costs incurred directly in relation to acquisitions in the amount of $1.2 million and $4.6 million , respectively ( three and nine months ended March 31, 2017 — $4.6 million and $15.3 million , respectively). Other charges (recoveries) ERP Implementation Costs During Fiscal 2018, we implemented a broad enterprise resource planning (ERP) system. For the three and nine months ended March 31, 2018 , we recorded charges of nil and $3.5 million , respectively, relating to the implementation of this project ( three and nine months ended March 31, 2017 — $2.6 million and $7.3 million , respectively). Other charges (recoveries) For the three months ended March 31, 2018 , "Other charges" include $1.7 million relating to system implementation costs and $0.9 million relating to other miscellaneous charges. These charges were partially offset by a recovery of $2.2 million relating to certain pre-acquisition sales and use tax liabilities becoming statute barred. For the nine months ended March 31, 2018 , "Other charges" include $1.7 million relating to system implementation costs and $3.0 million relating to miscellaneous other charges. These charges were partially offset by (i) $2.3 million relating to certain pre-acquisition sales and use tax liabilities that were recovered outside of the acquisition's one year measurement period and (ii) $2.2 million relating to certain pre-acquisition sales and use tax liabilities becoming statute barred. For the three months ended March 31, 2017 , "Other recoveries" primarily include (i) a net recovery of $2.7 million relating to commitment fees, (ii) $1.6 million relating to a recovery on certain interest on pre-acquisition liabilities becoming statute barred, and (iii) $1.3 million relating to a recovery on certain pre-acquisition sales and use tax liabilities being released upon becoming statute barred. For the nine months ended March 31, 2017 , "Other charges" primarily include (i) a net charge of $6.5 million relating to commitment fees and (ii) $1.2 million relating to post-acquisition integration costs necessary to streamline an acquired company into our operations. These charges were partially offset by (i) a recovery of $3.8 million relating to certain pre-acquisition sales and use tax liabilities being released upon becoming statute barred and (ii) $1.4 million relating to a recovery on certain interest on pre-acquisition liabilities becoming statute barred. The remaining amounts relate to miscellaneous other charges.

Acquisitions

Acquisitions	9 Months Ended
	Mar. 31, 2018
Business Combinations [Abstract]
ACQUISITIONS	ACQUISITIONS Fiscal 2018 Acquisitions Acquisition of Hightail, Inc. On February 14, 2018, we acquired all of the equity interest in Hightail, a leading cloud service provider for file sharing and creative collaboration, for approximately $20.5 million . In accordance with ASC Topic 805 "Business Combinations" (Topic 805), this acquisition was accounted for as a business combination. We believe this acquisition complements and extends our Enterprise Information Management (EIM) portfolio. The results of operations of this acquisition have been consolidated with those of OpenText beginning February 14, 2018. Preliminary Purchase Price Allocation The recognized amounts of identifiable assets acquired and liabilities assumed, based upon their preliminary fair values as of February 14, 2018, are set forth below: Current assets $ 1,327 Non-current tangible assets 1,265 Intangible customer assets 12,900 Intangible technology assets 4,200 Liabilities assumed (6,353 ) Total identifiable net assets 13,339 Goodwill 7,127 Net assets acquired $ 20,466 The goodwill of $7.1 million is primarily attributable to the synergies expected to arise after the acquisition. No portion of this goodwill is expected to be deductible for tax purposes. Included in total identifiable net assets is acquired deferred revenue with a fair value of $5.2 million , which represents our estimate of the fair value of the contractual obligations assumed based on a preliminary valuation. In arriving at this fair value, we reduced the acquired company’s original carrying value by $2.0 million . The fair value of current assets acquired includes accounts receivable with a fair value of $0.7 million . The gross amount receivable was $0.8 million of which $0.1 million of this receivable is expected to be uncollectible. Acquisition-related costs for Hightail included in "Special charges (recoveries)" in the Condensed Consolidated Financial Statements for the three and nine months ended March 31, 2018 was $0.5 million , respectively. The acquisition had no significant impact on revenues and net earnings for the three and nine months ended March 31, 2018 since the date of acquisition. Pro forma results of operations for this acquisition have not been presented because they are not material to the consolidated results of operations. The finalization of the purchase price allocation is pending the finalization of the valuation of fair value for assets acquired and liabilities assumed, including tax balances. We expect to finalize this determination on or before December 31, 2018. Acquisition of Guidance Software, Inc. On September 14, 2017, we acquired all of the equity interest in Guidance, a leading provider of forensic security solutions, for approximately $240.5 million . In accordance with Topic 805, this acquisition was accounted for as a business combination. We believe this acquisition complements and extends our EIM portfolio. The results of operations of this acquisition have been consolidated with those of OpenText beginning September 14, 2017. The following tables summarize the preliminary consideration paid for Guidance and the amount of the assets acquired and liabilities assumed, as well as the goodwill recorded as of the acquisition date: Cash consideration* $ 237,291 Guidance shares already owned by OpenText through open market purchases (at fair value) 3,247 Preliminary purchase consideration $ 240,538 * Inclusive of $2.3 million accrued for but unpaid as of March 31, 2018 . See "Appraisal Proceedings" below for more information. Preliminary Purchase Price Allocation The recognized amounts of identifiable assets acquired and liabilities assumed, based upon their preliminary fair values as of September 14, 2017, are set forth below: Current assets (inclusive of cash acquired of $5.7 million) $ 25,253 Non-current tangible assets 10,540 Intangible customer assets 71,230 Intangible technology assets 51,851 Liabilities assumed (48,670 ) Total identifiable net assets 110,204 Goodwill 130,334 Net assets acquired $ 240,538 The goodwill of $130.3 million is primarily attributable to the synergies expected to arise after the acquisition. Of this goodwill, approximately $1.9 million is expected to be deductible for tax purposes. Included in total identifiable net assets is acquired deferred revenue with a fair value of $26.6 million , which represents our estimate of the fair value of the contractual obligations assumed based on a preliminary valuation. In arriving at this fair value, we reduced the acquired company’s original carrying value by $7.6 million . The fair value of current assets acquired includes accounts receivable with a fair value of $10.3 million . The gross amount receivable was $11.8 million of which $1.5 million of this receivable is expected to be uncollectible. An amount of $0.8 million , representing the mark to market gain on the shares we held in Guidance prior to the acquisition, was recorded to "Other income" in our Condensed Consolidated Statements of Income for the nine months ended March 31, 2018 . Acquisition-related costs for Guidance included in "Special charges (recoveries)" in the Condensed Consolidated Financial Statements for the three and nine months ended March 31, 2018 were $0.4 million and $2.7 million , respectively. The acquisition had no significant impact on revenues and net earnings for the three and nine months ended March 31, 2018 since the date of acquisition. Pro forma results of operations for this acquisition have not been presented because they are not material to the consolidated results of operations. The finalization of the purchase price allocation is pending the finalization of the valuation of fair value for assets acquired and liabilities assumed, including tax balances. We expect to finalize this determination on or before September 30, 2018. Appraisal Proceedings Under Section 262 of the Delaware General Corporation Law, shareholders who did not tender their shares in connection with our tender offer were entitled to have their shares appraised by the Delaware Court of Chancery and receive payment of the “fair value” of such shares. On August 31, 2017 we received notice from the record holder of approximately 1,519,569 shares or 5% of the issued and outstanding Guidance shares as of the date of acquisition, demanding an appraisal of the fair value of Guidance shares as they believed the price we paid for Guidance shares was less than its fair value. We accrued $10.8 million in connection with these claims, which is equivalent to paying $7.10 per Guidance share, the amount these Guidance shareholders otherwise would have received had they tendered their shares in our offer. During the second quarter of Fiscal 2018, we paid $8.5 million to the trust account of dissenting shareholders’ attorney, leaving $2.3 million accrued and unpaid for this matter. The amount accrued has been included within "Accounts payable and accrued liabilities" in the Condensed Consolidated Balance Sheets , with no impact to our Condensed Consolidated Statements of Income provided the courts rule within the open measurement period of 12 months from acquisition date. Acquisition of Covisint Corporation On July 26, 2017, we acquired all of the equity interest in Covisint, a leading cloud platform for building Identity, Automotive, and Internet of Things applications, for approximately $102.8 million . In accordance with Topic 805, this acquisition was accounted for as a business combination. We believe this acquisition complements and extends our EIM portfolio. The results of operations of this acquisition have been consolidated with those of OpenText beginning July 26, 2017. Preliminary Purchase Price Allocation The recognized amounts of identifiable assets acquired and liabilities assumed, based upon their preliminary fair values as of July 26, 2017, are set forth below: Current assets (inclusive of cash acquired of $31.5 million) $ 41,586 Non-current tangible assets 3,426 Intangible customer assets 36,600 Intangible technology assets 17,300 Liabilities assumed (23,033 ) Total identifiable net assets 75,879 Goodwill 26,905 Net assets acquired $ 102,784 The goodwill of $26.9 million is primarily attributable to the synergies expected to arise after the acquisition. Of this goodwill, approximately $26.8 million is expected to be deductible for tax purposes. Included in total identifiable net assets is acquired deferred revenue with a fair value of $12.2 million , which represents our estimate of the fair value of the contractual obligations assumed based on a preliminary valuation. In arriving at this fair value, we reduced the acquired company’s original carrying value by $4.6 million . The fair value of current assets acquired includes accounts receivable with a fair value of $7.8 million . The gross amount receivable was $7.9 million of which $0.1 million of this receivable is expected to be uncollectible. Acquisition-related costs for Covisint included in "Special charges (recoveries)" in the Condensed Consolidated Financial Statements for the three and nine months ended March 31, 2018 were nil and $0.9 million , respectively. The acquisition had no significant impact on revenues and net earnings for the three and nine months ended March 31, 2018 since the date of acquisition. Pro forma results of operations for this acquisition have not been presented because they are not material to the consolidated results of operations. The finalization of the purchase price allocation is pending the finalization of the valuation of fair value for assets acquired and liabilities assumed, including tax balances. We expect to finalize this determination on or before June 30, 2018. Fiscal 2017 Acquisitions Purchase of an Asset Group Constituting a Business - ECD Business On January 23, 2017 , we acquired certain assets and assumed certain liabilities of the enterprise content division of EMC Corporation, a Massachusetts corporation, and certain of its subsidiaries, collectively referred to as Dell-EMC (ECD Business) for approximately $1.62 billion . In accordance with Topic 805, this acquisition was accounted for as a business combination. ECD Business offers OpenText a suite of leading Enterprise Content Management solutions with deep industry focus, including the Documentum TM , InfoArchive TM , and LEAP TM product families. We believe this acquisition complements and extends our EIM portfolio. The results of operations of this acquisition were consolidated with those of OpenText beginning January 23, 2017. Purchase Price Allocation The recognized amounts of identifiable assets acquired and liabilities assumed, based upon their fair values as of January 23, 2017, are set forth below: Current assets $ 11,339 Non-current tangible assets 103,672 Intangible customer assets 407,000 Intangible technology assets 459,000 Liabilities assumed (182,301 ) Total identifiable net assets 798,710 Goodwill 823,684 Net assets acquired $ 1,622,394 The goodwill of $823.7 million is primarily attributable to the synergies expected to arise after the acquisition. Of this goodwill, approximately $378.5 million is expected to be deductible for tax purposes. Included in total identifiable net assets is acquired deferred revenue with a fair value of $ 163.8 million , which represents our estimate of the fair value of the contractual obligations assumed. In arriving at this fair value, we reduced the acquired company’s original carrying value by $52.0 million . Further, included within total identifiable net assets are also certain contract assets which represent revenue earned by the ECD Business on long-term projects for which billings had not yet occurred as of January 23, 2017 . As these long-term projects have now been inherited by OpenText, we are responsible for billing and collecting cash on these projects at the appropriate time, yet we do not and will not recognize revenue for these billings. The fair value assigned to these contract assets as of January 23, 2017 was $8.4 million . Purchase of an Asset Group Constituting a Business - CCM Business On July 31, 2016 , we acquired certain customer communications management software and services assets and liabilities from HP Inc. (CCM Business) for approximately $315.0 million . In accordance with Topic 805, this acquisition was accounted for as a business combination. We believe this acquisition complements our current software portfolio, and allows us to better serve our customers by offering a wider set of CCM capabilities. The results of operations of this acquisition were consolidated with those of OpenText beginning July 31, 2016. Purchase Price Allocation The recognized amounts of identifiable assets acquired and liabilities assumed, based upon their fair values as of July 31, 2016, are set forth below: Current assets $ 683 Non-current deferred tax asset 11,861 Non-current tangible assets 2,348 Intangible customer assets 64,000 Intangible technology assets 101,000 Liabilities assumed (38,090 ) Total identifiable net assets 141,802 Goodwill 173,198 Net assets acquired $ 315,000 The goodwill of $173.2 million is primarily attributable to the synergies expected to arise after the acquisition. Of this goodwill, approximately $105.1 million is expected to be deductible for tax purposes. Acquisition of Recommind, Inc. O n July 20, 2016, we acquired all of the equity interest in Recommind, Inc. (Recommind), a leading provider of eDiscovery and information analytics, for approximately $170.1 million . In accordance with Topic 805, this acquisition was accounted for as a business combination. We believe this acquisition complements our EIM solutions, and through eDiscovery and analytics, provides increased visibility into structured and unstructured data. The results of operations of Recommind, were consolidated with those of OpenText beginning July 20, 2016. Purchase Price Allocation The recognized amounts of identifiable assets acquired and liabilities assumed, based upon their fair values as of July 20, 2016, are set forth below: Current assets $ 30,034 Non-current tangible assets 1,245 Intangible customer assets 51,900 Intangible technology assets 24,800 Long-term deferred tax liabilities (1,780 ) Other liabilities assumed (27,497 ) Total identifiable net assets 78,702 Goodwill 91,405 Net assets acquired $ 170,107 The goodwill of $91.4 million is primarily attributable to the synergies expected to arise after the acquisition. No portion of this goodwill is expected to be deductible for tax purposes. The fair value of current assets acquired includes accounts receivable with a fair value of $28.7 million . The gross amount receivable was $29.6 million of which $0.9 million of this receivable was expected to be uncollectible.

Supplemental Cash Flow Disclosu

Supplemental Cash Flow Disclosures	9 Months Ended
	Mar. 31, 2018
Supplemental Cash Flow Information [Abstract]
SUPPLEMENTAL CASH FLOW DISCLOSURES	SUPPLEMENTAL CASH FLOW DISCLOSURES Three Months Ended March 31, Nine Months Ended March 31, 2018 2017 2018 2017 Cash paid during the period for interest $ 32,489 $ 29,889 $ 97,353 $ 83,474 Cash received during the period for interest $ 332 $ 1,164 $ 873 $ 2,634 Cash paid during the period for income taxes $ 23,654 $ 21,146 $ 52,488 $ 60,828

Earnings Per Share

Earnings Per Share	9 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE Basic earnings per share are computed by dividing net income, attributable to OpenText, by the weighted average number of Common Shares outstanding during the period. Diluted earnings per share are computed by dividing net income, attributable to OpenText, by the shares used in the calculation of basic earnings per share plus the dilutive effect of Common Share equivalents, such as stock options, using the treasury stock method. Common Share equivalents are excluded from the computation of diluted earnings per share if their effect is anti-dilutive. Three Months Ended March 31, Nine Months Ended March 31, 2018 2017 2018 2017 Basic earnings per share Net income attributable to OpenText $ 58,794 $ 21,616 $ 180,501 $ 979,522 (1) Basic earnings per share attributable to OpenText $ 0.22 $ 0.08 $ 0.68 $ 3.91 Diluted earnings per share Net income attributable to OpenText $ 58,794 $ 21,616 $ 180,501 $ 979,522 (1) Diluted earnings per share attributable to OpenText $ 0.22 $ 0.08 $ 0.68 $ 3.88 Weighted-average number of shares outstanding Basic 266,572 263,329 265,619 250,538 Effect of dilutive securities 1,192 2,111 1,335 1,931 Diluted 267,764 265,440 266,954 252,469 Excluded as anti-dilutive (2) 2,102 1,117 2,690 1,577 (1) Please also see note 14 "Income Taxes" for details relating to a one-time tax benefit of $876.1 million recorded during the three months ended September 30, 2016 in connection with an internal reorganization of our subsidiaries. (2) Represents options to purchase Common Shares excluded from the calculation of diluted earnings per share because the exercise price of the stock options was greater than or equal to the average price of the Common Shares during the period.

Related Party Transactions

Related Party Transactions	9 Months Ended
	Mar. 31, 2018
Related Party Transaction, Due from (to) Related Party [Abstract]
RELATED PARTY TRANSACTIONS	RELATED PARTY TRANSACTIONS Our procedure regarding the approval of any related party transaction requires that the material facts of such transaction be reviewed by the independent members of the Audit Committee and the transaction be approved by a majority of the independent members of the Audit Committee. The Audit Committee reviews all transactions in which we are, or will be, a participant and any related party has or will have a direct or indirect interest in the transaction. In determining whether to approve a related party transaction, the Audit Committee generally takes into account, among other facts it deems appropriate, whether the transaction is on terms no less favorable than terms generally available to an unaffiliated third party under the same or similar circumstances; the extent and nature of the related person’s interest in the transaction; the benefits to the Company of the proposed transaction; if applicable, the effects on a director’s independence; and if applicable, the availability of other sources of comparable services or products. During the nine months ended March 31, 2018 , Mr. Stephen Sadler, a director, earned $0.8 million ( nine months ended March 31, 2017 — $0.8 million ) in consulting fees from OpenText for assistance with acquisition-related business activities. Mr. Sadler abstained from voting on all transactions from which he would potentially derive consulting fees.

Subsequent Event

Subsequent Event	9 Months Ended
	Mar. 31, 2018
Subsequent Events [Abstract]
SUBSEQUENT EVENT	SUBSEQUENT EVENT Cash Dividends As part of our quarterly, non-cumulative cash dividend program, we declared, on May 8, 2018 , a dividend of $0.1518 per Common Share. The record date for this dividend is June 8, 2018 and the payment date is June 29, 2018 . Future declarations of dividends and the establishment of future record and payment dates are subject to the final determination and discretion of our Board.

Recent Accounting Pronounceme30

Recent Accounting Pronouncements (Policies)	9 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Use of estimates	The preparation of financial statements in conformity with U.S. GAAP requires us to make estimates, judgments and assumptions that affect the amounts reported in the Condensed Consolidated Financial Statements . These estimates, judgments and assumptions are evaluated on an ongoing basis. We base our estimates on historical experience and on various other assumptions that we believe are reasonable at that time, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from those estimates. In particular, significant estimates, judgments and assumptions include those related to: (i) revenue recognition, (ii) testing of goodwill for impairment, (iii) the valuation of acquired intangible assets, (iv) the valuation of long-lived assets, (v) the recognition of contingencies, (vi) restructuring accruals, (vii) acquisition accruals and pre-acquisition contingencies, (viii) the realization of investment tax credits, (ix) the valuation of stock options granted and obligations related to share-based payments, including the valuation of our long-term incentive plans, (x) the valuation of pension assets and obligations, and (xi) accounting for income taxes.
Leases	In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-02 “Leases (Topic 842)” (ASU 2016-02), which supersedes the guidance in former Accounting Standards Codification (ASC) Topic 840 “Leases”. The most significant change will result in the recognition of lease assets for the right to use the underlying asset and lease liabilities for the obligation to make lease payments by lessees, for those leases classified as operating leases under current guidance. The new guidance will also require significant additional disclosures about the amount, timing and uncertainty of cash flows related to leases. This standard is effective for us for our fiscal year ending June 30, 2020, with early adoption permitted. Upon adoption of ASU 2016-02, entities are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. We have formed a sub-committee consisting of internal members from various departments to assess the effect that the pending adoption of ASU 2016-02 will have on our Condensed Consolidated Balance Sheets. Although the sub-committee has not completed their assessment, we expect the majority of the impact to come from our facility leases, and that most of our operating lease commitments will be recognized as right of use assets and operating lease liabilities, which will increase our total assets and total liabilities, as reported on our Condensed Consolidated Balance Sheets, relative to such amounts prior to adoption. The sub-committee continues to evaluate the impact of the new standard on our Condensed Consolidated Financial Statements.
Revenue Recognition	In May 2014, the FASB issued ASC 606 "Revenue from Contracts with Customers" (Topic 606). Topic 606 supersedes the revenue recognition requirements in ASC Topic 605, "Revenue Recognition" (Topic 605) and nearly all other existing revenue recognition guidance under U.S. GAAP. The core principal of Topic 606 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services and permits the use of the retrospective or cumulative effect transition method. Topic 606 identifies five steps to be followed to achieve its core principal, which include (i) identifying contract(s) with customers, (ii) identifying performance obligations in the contract(s), (iii) determining the transaction price, (iv) allocating the transaction price to the performance obligations in the contract(s) and (v) recognizing revenue when (or as) the entity satisfies a performance obligation. We will be adopting Topic 606 using the cumulative effect approach when this guidance becomes effective for us, starting in the first quarter of our fiscal year ending June 30, 2019. While we are continuing to assess all potential impacts of Topic 606, we currently believe the key differences relate to our accounting for implementation services on cloud arrangements, accounting for on premise subscription offerings and costs to obtain a contract. Implementation Services on Cloud Arrangements Under Topic 605, fees charged for professional services to implement hosted software within a cloud arrangement are deferred and recognized ratably over the longer of the non-cancellable contract term or the estimated customer life because the activities are not deemed to be a separate element for which stand-alone value exists. Under Topic 606, we expect such professional services revenues to be more variable from period to period, as we will be required to accelerate the recognition of revenues allocated to the implementation services, based on the stand alone selling price that meet the criteria of being distinct and recognize them as the services are provided to the customer. Any implementation services that do not meet the criteria of being distinct will be deferred and amortized over the contract term. Costs relating to distinct implementation services will be expensed as they are incurred. On Premise Subscription Arrangements Under Topic 605, revenue attributable to on premise subscription arrangements is recognized under “Cloud Services and Subscriptions revenue” and is recognized ratably over the term of the arrangement because Vendor Specific Objective Evidence (VSOE) does not exist for the undelivered maintenance and support element of the arrangement, as it is not sold separately. Under Topic 606, the requirement to have VSOE for undelivered elements to enable the separation of the delivered software licenses from the on-going customer support and maintenance services is eliminated. Accordingly, we expect the adoption of Topic 606 will result in a change in our recording of on premise subscription revenues from “Cloud Services and Subscriptions revenues” to “License” and “Customer Support” revenues in our Consolidated Statements of Income. Further, we expect to accelerate the recognition of a portion of the transaction price at the outset of the arrangement (upon delivery) as “License revenue”, using the residual approach for estimating stand-alone selling price. Over the course of the service period, “Customer Support revenues” will be recognized based on the stand-alone selling price for those services. Costs to obtain a contract The accounting for the recognition of costs related to obtaining customer contracts under Topic 606 is not significantly different from our current policy to defer commissions, although there will be certain modifications to reflect the changes in the pattern and timing of recognition of certain arrangements as discussed above. We will be evaluating revenue contracts that were in effect on the adoption date as if they had been accounted for under Topic 606 from contract inception. As a result, certain revenue that would have been recognized in future periods under Topic 605 will now be accounted for and disclosed under Topic 606 as though the revenue had already been recognized in prior periods, resulting in us having to make a cumulative effect adjustment to our retained earnings in the first period of adoption. We are still in the process of reviewing these adjustments, finalizing our assessment and quantifying the impacts of Topic 606 and the methodology of estimating standalone selling price for certain of the separately identified performance obligations under the new revenue recognition standard. Certain contracts are complex, and actual determination of revenue recognition under both existing and new guidance is dependent on contract-specific terms, which may cause variability in the timing and quantum of revenue recognized. We will continue to assess all of the impacts that the application of Topic 606 will have on our Condensed Consolidated Financial Statements, including on our disclosure requirements, and, if material, will provide updated disclosures with regard to the expected impact.
ASUs adopted in Fiscal 2018	During Fiscal 2018 we adopted the following ASU, which did not have a material impact to our reported financial position, results of operations or cash flows: • ASU 2016-09 "Compensation-Stock Compensation (Topic 718)"

Allowance for Doubtful Accoun31

Allowance for Doubtful Accounts (Tables)	9 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Changes in Carrying Amount of Allowance For Doubtful Accounts	Balance as of June 30, 2017 $ 6,319 Bad debt expense 6,561 Write-off /adjustments (3,873 ) Balance as of March 31, 2018 $ 9,007

Property and Equipment (Tables)

Property and Equipment (Tables)	9 Months Ended
	Mar. 31, 2018
Property, Plant and Equipment [Abstract]
Components of Property and Equipment by Type	As of March 31, 2018 Cost Accumulated Depreciation Net Furniture and fixtures $ 30,433 $ (16,501 ) $ 13,932 Office equipment 1,445 (716 ) 729 Computer hardware 198,432 (126,397 ) 72,035 Computer software 82,791 (44,767 ) 38,024 Capitalized software development costs 77,592 (38,163 ) 39,429 Leasehold improvements 113,171 (49,824 ) 63,347 Land and buildings 48,484 (11,121 ) 37,363 Total $ 552,348 $ (287,489 ) $ 264,859 As of June 30, 2017 Cost Accumulated Depreciation Net Furniture and fixtures $ 23,026 $ (14,879 ) $ 8,147 Office equipment 1,245 (597 ) 648 Computer hardware 164,268 (104,572 ) 59,696 Computer software 72,835 (33,862 ) 38,973 Capitalized software development costs 67,092 (28,430 ) 38,662 Leasehold improvements 81,564 (38,642 ) 42,922 Land and buildings 48,431 (10,061 ) 38,370 Total $ 458,461 $ (231,043 ) $ 227,418

Goodwill (Tables)

Goodwill (Tables)	9 Months Ended
	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Changes In Carrying Amount of Goodwill	The following table summarizes the changes in goodwill since June 30, 2017: Balance as of June 30, 2017 $ 3,416,749 Acquisition of Hightail (note 18) 7,127 Acquisition of Guidance (note 18) 130,334 Acquisition of Covisint (note 18) 26,905 Adjustments relating to acquisitions prior to Fiscal 2018 that had open measurement periods (note 18) (1,458 ) Adjustments on account of foreign exchange 12,941 Balance as of March 31, 2018 $ 3,592,598

Acquired Intangible Assets (Tab

Acquired Intangible Assets (Tables)	9 Months Ended
	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Calculation of Acquired Intangibles by Asset Class	As of March 31, 2018 Cost Accumulated Amortization Net Technology assets $ 985,226 $ (392,297 ) $ 592,929 Customer assets 1,348,510 (550,026 ) 798,484 Total $ 2,333,736 $ (942,323 ) $ 1,391,413 As of June 30, 2017 Cost Accumulated Amortization Net Technology assets $ 930,841 $ (272,872 ) $ 657,969 Customer assets 1,230,806 (416,233 ) 814,573 Total $ 2,161,647 $ (689,105 ) $ 1,472,542
Calculation of Estimated Future Amortization Expense	The following table shows the estimated future amortization expense for the fiscal years indicated. This calculation assumes no future adjustments to acquired intangible assets: Fiscal years ending June 30, 2018 (three months ended June 30) $ 94,776 2019 352,401 2020 280,888 2021 190,763 2022 177,208 2023 and beyond 295,377 Total $ 1,391,413

Other Assets (Tables)

Other Assets (Tables)	9 Months Ended
	Mar. 31, 2018
Other Assets, Noncurrent Disclosure [Abstract]
Components of Other Assets	As of March 31, 2018 As of June 30, 2017 Deposits and restricted cash $ 11,479 $ 15,821 Deferred implementation costs 28,916 28,833 Investments 36,776 27,886 Marketable securities — 3,023 Long-term prepaid expenses and other long-term assets 22,561 18,200 Total $ 99,732 $ 93,763

Accounts Payable and Accrued 36

Accounts Payable and Accrued Liabilities (Tables)	9 Months Ended
	Mar. 31, 2018
Accounts Payable and Accrued Liabilities [Abstract]
Schedule of Current Liabilities	Accounts payable and accrued liabilities are comprised of the following: As of March 31, 2018 As of June 30, 2017 Accounts payable—trade $ 39,283 $ 43,699 Accrued salaries and commissions 103,245 121,958 Accrued liabilities 118,628 135,512 Accrued interest on Senior Notes 26,021 24,787 Amounts payable in respect of restructuring and other Special charges 5,000 13,728 Asset retirement obligations 2,988 2,436 Total $ 295,165 $ 342,120
Schedule of Long-Term Accrued Liabilities	As of March 31, 2018 As of June 30, 2017 Amounts payable in respect of restructuring and other Special charges $ 2,124 $ 2,686 Other accrued liabilities* 37,164 36,702 Asset retirement obligations 13,400 10,950 Total $ 52,688 $ 50,338 * Other accrued liabilities consist primarily of tenant allowances, deferred rent and lease fair value adjustments relating to certain facilities acquired through business acquisitions.

Long-Term Debt (Tables)

Long-Term Debt (Tables)	9 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	Long-term debt is comprised of the following: As of March 31, 2018 As of June 30, 2017 Total debt Senior Notes 2026 $ 850,000 $ 850,000 Senior Notes 2023 800,000 800,000 Term Loan B 766,300 772,120 Revolver 275,000 175,000 Total principal payments due 2,691,300 2,597,120 Premium on Senior Notes 2026 6,164 6,597 Debt issuance costs (29,382 ) (33,900 ) Total amount outstanding 2,668,082 2,569,817 Less: Current portion of long-term debt Term Loan B 7,760 7,760 Revolver 275,000 175,000 Total current portion of long-term debt 282,760 182,760 Non-current portion of long-term debt $ 2,385,322 $ 2,387,057

Pension Plans and Other Post 38

Pension Plans and Other Post Retirement Benefits (Tables)	9 Months Ended
	Mar. 31, 2018
Retirement Benefits [Abstract]
Schedule of Defined Benefit Plan and Long-Term Employee Benefit Obligations	The following table provides details of our defined benefit pension plans and long-term employee benefit obligations for Open Text Document Technologies GmbH (CDT), GXS GmbH ( GXS GER ), GXS Philippines, Inc. ( GXS PHP ) and other plans as of March 31, 2018 and June 30, 2017 : As of March 31, 2018 Total benefit obligation Current portion of benefit obligation* Non-current portion of benefit obligation CDT defined benefit plan $ 31,700 $ 688 $ 31,012 GXS Germany defined benefit plan 25,873 1,035 24,838 GXS Philippines defined benefit plan 3,801 102 3,699 Other plans 3,624 177 3,447 Total $ 64,998 $ 2,002 $ 62,996 As of June 30, 2017 Total benefit obligation Current portion of benefit obligation* Non-current portion of benefit obligation CDT defined benefit plan $ 28,881 $ 583 $ 28,298 GXS Germany defined benefit plan 23,730 926 22,804 GXS Philippines defined benefit plan 4,495 81 4,414 Other plans 3,256 145 3,111 Total $ 60,362 $ 1,735 $ 58,627 * The current portion of the benefit obligation has been included within "Accrued salaries and commissions", all within "Accounts payable and accrued liabilities" in the Condensed Consolidated Balance Sheets (see note 9 "Accounts Payable and Accrued Liabilities").
Schedule of the Change in the Benefit Obligation of Defined Benefit Plan	The following are the details of the change in the benefit obligation for each of the above mentioned pension plans for the periods indicated: As of March 31, 2018 As of June 30, 2017 CDT GXS GER GXS PHP Total CDT GXS GER GXS PHP Total Benefit obligation—beginning of period $ 28,881 $ 23,730 $ 4,495 $ 57,106 $ 29,450 $ 24,729 $ 7,341 $ 61,520 Service cost 379 357 657 1,393 467 395 1,051 1,913 Interest cost 459 370 176 1,005 456 377 226 1,059 Benefits paid (428 ) (736 ) (82 ) (1,246 ) (469 ) (807 ) (53 ) (1,329 ) Actuarial (gain) loss (327 ) (96 ) (1,269 ) (1,692 ) (1,708 ) (1,548 ) (3,728 ) (6,984 ) Foreign exchange (gain) loss 2,736 2,248 (176 ) 4,808 685 584 (342 ) 927 Benefit obligation—end of period 31,700 25,873 3,801 61,374 28,881 23,730 4,495 57,106 Less: Current portion (688 ) (1,035 ) (102 ) (1,825 ) (583 ) (926 ) (81 ) (1,590 ) Non-current portion of benefit obligation $ 31,012 $ 24,838 $ 3,699 $ 59,549 $ 28,298 $ 22,804 $ 4,414 $ 55,516
Components of Net Pension Expense for Pension Plan	The following are details of net pension expense relating to the following pension plans: Three Months Ended March 31, 2018 2017 Pension expense: CDT GXS GER GXS PHP Total CDT GXS GER GXS PHP Total Service cost $ 130 $ 123 $ 210 $ 463 $ 115 $ 97 $ 196 $ 408 Interest cost 158 127 62 347 113 93 51 257 Amortization of actuarial (gains) and losses 141 19 (59 ) 101 155 42 (12 ) 185 Net pension expense $ 429 $ 269 $ 213 $ 911 $ 383 $ 232 $ 235 $ 850 Nine Months Ended March 31, 2018 2017 Pension expense: CDT GXS GER GXS PHP Total CDT GXS GER GXS PHP Total Service cost $ 379 $ 357 $ 657 $ 1,393 $ 347 $ 292 $ 838 $ 1,477 Interest cost 459 370 176 1,005 339 279 172 790 Amortization of actuarial (gains) and losses 409 55 (182 ) 282 465 125 (36 ) 554 Net pension expense $ 1,247 $ 782 $ 651 $ 2,680 $ 1,151 $ 696 $ 974 $ 2,821
Schedule of Weighted-Average Key Assumptions Used for CDT Pension Plan	In determining the fair value of the pension plan benefit obligations as of March 31, 2018 and June 30, 2017 , respectively, we used the following weighted-average key assumptions: As of March 31, 2018 As of June 30, 2017 CDT GXS GER GXS PHP CDT GXS GER GXS PHP Assumptions: Salary increases 2.00% 2.00% 6.20% 2.00% 2.00% 6.20% Pension increases 1.75% 2.00% N/A 1.75% 2.00% N/A Discount rate 2.05% 2.05% 7.00% 2.00% 2.00% 5.00% Normal retirement age 65 65-67 60 65 65-67 60 Employee fluctuation rate: to age 20 —% —% 12.19% —% —% 12.19% to age 25 —% —% 16.58% —% —% 16.58% to age 30 1.00% —% 13.97% 1.00% —% 13.97% to age 35 0.50% —% 10.77% 0.50% —% 10.77% to age 40 —% —% 7.39% —% —% 7.39% to age 45 0.50% —% 3.28% 0.50% —% 3.28% to age 50 0.50% —% —% 0.50% —% —% from age 51 1.00% —% —% 1.00% —% —%
Anticipated Pension Payments Under Pension Plan	Anticipated pension payments under the pension plans for the fiscal years indicated below are as follows: Fiscal years ending June 30, CDT GXS GER GXS PHP 2018 (three months ended June 30) $ 159 $ 253 $ 25 2019 706 1,042 115 2020 760 1,050 154 2021 858 1,095 194 2022 945 1,106 297 2023 to 2027 5,912 5,895 2,056 Total $ 9,340 $ 10,441 $ 2,841

Share Capital, Option Plans a39

Share Capital, Option Plans and Share-Based Payments (Tables)	9 Months Ended
	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Share-based Compensation Costs	Total share-based compensation expense for the periods indicated below is detailed as follows: Three Months Ended March 31, Nine Months Ended March 31, 2018 2017 2018 2017 Stock options $ 983 $ 2,365 $ 7,014 $ 9,040 Performance Share Units (issued under LTIP) 751 926 2,723 2,754 Restricted Share Units (issued under LTIP) 1,588 1,573 4,987 4,940 Restricted Share Units (other) 146 534 823 2,029 Deferred Share Units (directors) 701 558 2,193 1,899 Employee Share Purchase Plan 911 705 2,733 1,711 Total share-based compensation expense $ 5,080 $ 6,661 $ 20,473 $ 22,373
Summary of Option Activity	A summary of activity under our stock option plans for the nine months ended March 31, 2018 is as follows: Options Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term (years) Aggregate Intrinsic Value ($’000s) Outstanding at June 30, 2017 8,977,830 $ 24.57 Granted 848,830 34.55 Exercised (2,683,814 ) 18.68 Forfeited or expired (296,166 ) 30.48 Outstanding at March 31, 2018 6,846,680 $ 27.86 4.48 $ 47,591 Exercisable at March 31, 2018 2,303,668 $ 23.91 3.22 $ 25,095
Schedule of Weighted-Average Fair Value of Options and Weighted-Average Assumptions Used	For the periods indicated, the weighted-average fair value of options and weighted-average assumptions were as follows: Three Months Ended March 31, Nine Months Ended March 31, 2018 2017 2018 2017 Weighted–average fair value of options granted $ 8.14 $ 7.32 $ 7.48 $ 6.86 Weighted-average assumptions used: Expected volatility 26.95 % 27.64 % 27.10 % 28.61 % Risk–free interest rate 2.44 % 1.70 % 1.83 % 1.32 % Expected dividend yield 1.45 % 1.37 % 1.45 % 1.42 % Expected life (in years) 4.33 4.34 4.42 4.33 Forfeiture rate (based on historical rates) 6 % 5 % 6 % 5 % Average exercise share price $ 36.50 $ 33.48 $ 34.55 $ 31.34

Guarantees and Contingencies (T

Guarantees and Contingencies (Tables)	9 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Contractual Obligations	We have entered into the following contractual obligations with minimum payments for the indicated fiscal periods as follows: Payments due between Total April 1, 2018— July 1, 2018— July 1, 2020— July 1, 2022 Long-term debt obligations (1) $ 3,424,525 $ 186,654 $ 389,329 $ 953,792 $ 1,894,750 Operating lease obligations (2) 397,539 20,530 140,044 105,496 131,469 Purchase obligations 17,867 2,622 14,439 806 — $ 3,839,931 $ 209,806 $ 543,812 $ 1,060,094 $ 2,026,219 (1) Includes interest up to maturity and principal payments. We currently have borrowings outstanding under the Revolver ( $275 million as of March 31, 2018 ), which we expect to repay within the next 12 months. Please see note 10 "Long-Term Debt" for more details. (2) Net of $8.6 million of sublease income to be received from properties which we have subleased to third parties.

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Interest and Penalties Related to Liabilities for Income Tax Expense	For the three and nine months ended March 31, 2018 and 2017 , we recognized the following amounts as income tax-related interest expense and penalties: Three Months Ended March 31, Nine Months Ended March 31, 2018 2017 2018 2017 Interest expense $ 18 $ 1,673 $ 3,915 $ 4,456 Penalties expense (recoveries) 453 6 (90 ) (318 ) Total $ 471 $ 1,679 $ 3,825 $ 4,138
Interest Accrued and Penalties Accrued Related to Income Tax Expense	The following amounts have been accrued on account of income tax-related interest expense and penalties: As of March 31, 2018 As of June 30, 2017 Interest expense accrued * $ 52,094 $ 47,402 Penalties accrued * $ 2,325 $ 2,160 * These balances have been included within "Long-term income taxes payable" within the Condensed Consolidated Balance Sheets .

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	9 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis	Our financial assets and liabilities measured at fair value on a recurring basis consisted of the following types of instruments as of March 31, 2018 and June 30, 2017 : March 31, 2018 June 30, 2017 Fair Market Measurements using: Fair Market Measurements using: March 31, 2018 Quoted prices in active markets for identical assets/ (liabilities) Significant other observable inputs Significant unobservable inputs June 30, 2017 Quoted prices in active markets for identical assets/ (liabilities) Significant other observable inputs Significant unobservable inputs (Level 1) (Level 2) (Level 3) (Level 1) (Level 2) (Level 3) Financial Assets: Marketable securities N/A N/A N/A N/A $ 3,023 N/A $ 3,023 N/A Derivative financial instrument asset (note 16) — N/A — N/A 1,174 N/A 1,174 N/A $ — N/A $ — N/A $ 4,197 N/A $ 4,197 N/A Financial Liabilities: Derivative financial instrument liability (note 16) $ (618 ) N/A $ (618 ) N/A $ — N/A $ — N/A $ (618 ) N/A $ (618 ) N/A $ — N/A $ — N/A
Fair Value, by Balance Sheet Grouping	A summary of our marketable securities outstanding as of March 31, 2018 and June 30, 2017 is as follows: As of March 31, 2018 As of June 30, 2017 Cost Gross Unrealized Gains Gross Unrealized (Losses) Estimated Fair Value Cost Gross Unrealized Gains Gross Unrealized (Losses) Estimated Fair Value Marketable securities N/A N/A N/A N/A $ 2,406 $ 617 $ — $ 3,023

Derivative Instruments and He43

Derivative Instruments and Hedging Activities (Tables)	9 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value of Derivative Instruments in the Condensed Consolidated Balance Sheets	The effect of these derivative instruments on our Condensed Consolidated Financial Statements for the periods indicated below were as follows (amounts presented do not include any income tax effects). Fair Value of Derivative Instruments in the Condensed Consolidated Balance Sheets (see note 15 "Fair Value Measurement") As of March 31, 2018 As of June 30, 2017 Derivatives Balance Sheet Location Fair Value Fair Value Foreign currency forward contracts designated as cash flow hedges Prepaid expenses and other current assets (Accounts payable and accrued liabilities) $ (618 ) $ 1,174
Effects of Derivative Instruments on Income and Other Comprehensive Income (OCI)	Effects of Derivative Instruments on Income and Other Comprehensive Income (OCI) Three and Nine Months Ended March 31, 2018 Derivatives in Cash Flow Hedging Relationship Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion) Location of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) Location of Gain or (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing) Amount of Gain or (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing) Three Months Ended March 31, 2018 Nine Months Ended March 31, 2018 Three Months Ended March 31, 2018 Nine Months Ended March 31, 2018 Three Months Ended March 31, 2018 Nine Months Ended March 31, 2018 Foreign currency forward contracts $ (1,273 ) $ 247 Operating $ 423 $ 2,039 N/A $ — $ — Three and Nine Months Ended March 31, 2017 Derivatives in Cash Flow Hedging Relationship Amount of Gain or (Loss) Location of Amount of Gain or Location of Amount of Gain or (Loss) Recognized in Three Months Ended March 31, 2017 Nine Months Ended March 31, 2017 Three Months Ended March 31, 2017 Nine Months Ended March 31, 2017 Three Months Ended March 31, 2017 Nine Months Ended March 31, 2017 Foreign currency forward contracts $ 473 $ (960 ) Operating $ (54 ) $ 92 N/A $ — $ —

Special Charges (Recoveries) (T

Special Charges (Recoveries) (Tables)	9 Months Ended
	Mar. 31, 2018
Restructuring Cost and Reserve [Line Items]
Schedule of Restructuring Reserve	Special charges (recoveries) include costs and recoveries that relate to certain restructuring initiatives that we have undertaken from time to time under our various restructuring plans, as well as acquisition-related costs and other charges. Three Months Ended March 31, Nine Months Ended March 31, 2018 2017 2018 2017 Fiscal 2018 Restructuring Plan $ 553 $ — $ 8,907 $ — Fiscal 2017 Restructuring Plan 525 18,888 3,947 20,744 Restructuring Plans prior to Fiscal 2017 Restructuring Plan 4 (68 ) 260 (1,872 ) Acquisition-related costs 1,172 4,639 4,625 15,305 Other charges (recoveries) 390 (2,873 ) 3,651 9,980 Total $ 2,644 $ 20,586 $ 21,390 $ 44,157
Fiscal 2018 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Schedule of Restructuring Reserve	A reconciliation of the beginning and ending liability for the nine months ended March 31, 2018 is shown below. Fiscal 2018 Restructuring Plan Workforce reduction Facility costs Total Balance payable as at June 30, 2017 $ — $ — $ — Accruals and adjustments 7,977 930 8,907 Cash payments (8,637 ) (187 ) (8,824 ) Foreign exchange and other non-cash adjustments 912 (85 ) 827 Balance payable as at March 31, 2018 $ 252 $ 658 $ 910
Fiscal 2017 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Schedule of Restructuring Reserve	A reconciliation of the beginning and ending liability for the nine months ended March 31, 2018 is shown below. Fiscal 2017 Restructuring Plan Workforce reduction Facility costs Total Balance payable as at June 30, 2017 $ 10,045 $ 1,369 $ 11,414 Accruals and adjustments 3,371 576 3,947 Cash payments (12,068 ) (1,312 ) (13,380 ) Foreign exchange and other non-cash adjustments 590 (19 ) 571 Balance payable as at March 31, 2018 $ 1,938 $ 614 $ 2,552

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Mar. 31, 2018
Business Acquisition [Line Items]
Schedule of Business Acquisitions, by Acquisition	The following tables summarize the preliminary consideration paid for Guidance and the amount of the assets acquired and liabilities assumed, as well as the goodwill recorded as of the acquisition date: Cash consideration* $ 237,291 Guidance shares already owned by OpenText through open market purchases (at fair value) 3,247 Preliminary purchase consideration $ 240,538 * Inclusive of $2.3 million accrued for but unpaid as of March 31, 2018 . See "Appraisal Proceedings" below for more information.
Hightail, Inc
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The recognized amounts of identifiable assets acquired and liabilities assumed, based upon their preliminary fair values as of February 14, 2018, are set forth below: Current assets $ 1,327 Non-current tangible assets 1,265 Intangible customer assets 12,900 Intangible technology assets 4,200 Liabilities assumed (6,353 ) Total identifiable net assets 13,339 Goodwill 7,127 Net assets acquired $ 20,466
Guidance Software Inc.
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The recognized amounts of identifiable assets acquired and liabilities assumed, based upon their preliminary fair values as of September 14, 2017, are set forth below: Current assets (inclusive of cash acquired of $5.7 million) $ 25,253 Non-current tangible assets 10,540 Intangible customer assets 71,230 Intangible technology assets 51,851 Liabilities assumed (48,670 ) Total identifiable net assets 110,204 Goodwill 130,334 Net assets acquired $ 240,538
Covisint Corporation
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The recognized amounts of identifiable assets acquired and liabilities assumed, based upon their preliminary fair values as of July 26, 2017, are set forth below: Current assets (inclusive of cash acquired of $31.5 million) $ 41,586 Non-current tangible assets 3,426 Intangible customer assets 36,600 Intangible technology assets 17,300 Liabilities assumed (23,033 ) Total identifiable net assets 75,879 Goodwill 26,905 Net assets acquired $ 102,784
ECD Business
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The recognized amounts of identifiable assets acquired and liabilities assumed, based upon their fair values as of January 23, 2017, are set forth below: Current assets $ 11,339 Non-current tangible assets 103,672 Intangible customer assets 407,000 Intangible technology assets 459,000 Liabilities assumed (182,301 ) Total identifiable net assets 798,710 Goodwill 823,684 Net assets acquired $ 1,622,394
CCM Business
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The recognized amounts of identifiable assets acquired and liabilities assumed, based upon their fair values as of July 31, 2016, are set forth below: Current assets $ 683 Non-current deferred tax asset 11,861 Non-current tangible assets 2,348 Intangible customer assets 64,000 Intangible technology assets 101,000 Liabilities assumed (38,090 ) Total identifiable net assets 141,802 Goodwill 173,198 Net assets acquired $ 315,000
Recommind Inc
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The recognized amounts of identifiable assets acquired and liabilities assumed, based upon their fair values as of July 20, 2016, are set forth below: Current assets $ 30,034 Non-current tangible assets 1,245 Intangible customer assets 51,900 Intangible technology assets 24,800 Long-term deferred tax liabilities (1,780 ) Other liabilities assumed (27,497 ) Total identifiable net assets 78,702 Goodwill 91,405 Net assets acquired $ 170,107

Supplemental Cash Flow Disclo46

Supplemental Cash Flow Disclosures (Tables)	9 Months Ended
	Mar. 31, 2018
Supplemental Cash Flow Information [Abstract]
Supplemental Disclosure of Cash Flow Information	Three Months Ended March 31, Nine Months Ended March 31, 2018 2017 2018 2017 Cash paid during the period for interest $ 32,489 $ 29,889 $ 97,353 $ 83,474 Cash received during the period for interest $ 332 $ 1,164 $ 873 $ 2,634 Cash paid during the period for income taxes $ 23,654 $ 21,146 $ 52,488 $ 60,828

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share	Three Months Ended March 31, Nine Months Ended March 31, 2018 2017 2018 2017 Basic earnings per share Net income attributable to OpenText $ 58,794 $ 21,616 $ 180,501 $ 979,522 (1) Basic earnings per share attributable to OpenText $ 0.22 $ 0.08 $ 0.68 $ 3.91 Diluted earnings per share Net income attributable to OpenText $ 58,794 $ 21,616 $ 180,501 $ 979,522 (1) Diluted earnings per share attributable to OpenText $ 0.22 $ 0.08 $ 0.68 $ 3.88 Weighted-average number of shares outstanding Basic 266,572 263,329 265,619 250,538 Effect of dilutive securities 1,192 2,111 1,335 1,931 Diluted 267,764 265,440 266,954 252,469 Excluded as anti-dilutive (2) 2,102 1,117 2,690 1,577 (1) Please also see note 14 "Income Taxes" for details relating to a one-time tax benefit of $876.1 million recorded during the three months ended September 30, 2016 in connection with an internal reorganization of our subsidiaries. (2) Represents options to purchase Common Shares excluded from the calculation of diluted earnings per share because the exercise price of the stock options was greater than or equal to the average price of the Common Shares during the period.

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Details)	Mar. 31, 2018
OT South Africa
Noncontrolling Interest [Line Items]
Ownership percentage by Open Text	70.00%
GXS Korea
Noncontrolling Interest [Line Items]
Ownership percentage by Open Text	85.00%
GXS Singapore
Noncontrolling Interest [Line Items]
Ownership percentage by Open Text	81.00%

Allowance for Doubtful Accoun49

Allowance for Doubtful Accounts - Changes In Carrying Amount (Details) - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2018	Jun. 30, 2017
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance as of June 30, 2017	$ 6,319
Bad debt expense	6,561
Write-off /adjustments	(3,873)
Balance as of March 31, 2018	9,007
Unbilled receivables	$ 58,200	$ 46,200

Property and Equipment (Details

Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Property, Plant and Equipment [Line Items]
Cost	$ 552,348	$ 458,461
Accumulated Depreciation	(287,489)	(231,043)
Net	264,859	227,418
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Cost	30,433	23,026
Accumulated Depreciation	(16,501)	(14,879)
Net	13,932	8,147
Office equipment
Property, Plant and Equipment [Line Items]
Cost	1,445	1,245
Accumulated Depreciation	(716)	(597)
Net	729	648
Computer hardware
Property, Plant and Equipment [Line Items]
Cost	198,432	164,268
Accumulated Depreciation	(126,397)	(104,572)
Net	72,035	59,696
Computer software
Property, Plant and Equipment [Line Items]
Cost	82,791	72,835
Accumulated Depreciation	(44,767)	(33,862)
Net	38,024	38,973
Capitalized software development costs
Property, Plant and Equipment [Line Items]
Cost	77,592	67,092
Accumulated Depreciation	(38,163)	(28,430)
Net	39,429	38,662
Leasehold improvements
Property, Plant and Equipment [Line Items]
Cost	113,171	81,564
Accumulated Depreciation	(49,824)	(38,642)
Net	63,347	42,922
Land and buildings
Property, Plant and Equipment [Line Items]
Cost	48,484	48,431
Accumulated Depreciation	(11,121)	(10,061)
Net	$ 37,363	$ 38,370

Goodwill - Summary of Changes i

Goodwill - Summary of Changes in Carrying Amount of Goodwill (Details) $ in Thousands	9 Months Ended
	Mar. 31, 2018USD ($)
Goodwill [Roll Forward]
Balance as of June 30, 2017	$ 3,416,749
Adjustments relating to acquisitions prior to Fiscal 2018 that had open measurement periods (note 18)	(1,458)
Adjustments on account of foreign exchange	12,941
Balance as of March 31, 2018	3,592,598
Hightail, Inc
Goodwill [Roll Forward]
Acquisition (note 18)	7,127
Guidance Software Inc.
Goodwill [Roll Forward]
Acquisition (note 18)	130,334
Covisint Corporation
Goodwill [Roll Forward]
Acquisition (note 18)	$ 26,905

Acquired Intangible Assets - Ca

Acquired Intangible Assets - Calculation Of Acquired Intangibles By Asset Class (Details) - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2018	Jun. 30, 2017
Finite-Lived Intangible Assets, Net [Abstract]
Cost	$ 2,333,736	$ 2,161,647
Accumulated Amortization	(942,323)	(689,105)
Total	1,391,413	1,472,542
Technology assets
Finite-Lived Intangible Assets, Net [Abstract]
Cost	985,226	930,841
Accumulated Amortization	(392,297)	(272,872)
Total	592,929	657,969
Intangible assets fully amortized during the period	$ 19,000
Weighted-average amortization period (in years) for acquired intangible assets	6 years
Customer assets
Finite-Lived Intangible Assets, Net [Abstract]
Cost	$ 1,348,510	1,230,806
Accumulated Amortization	(550,026)	(416,233)
Total	798,484	$ 814,573
Intangible assets fully amortized during the period	$ 3,000
Weighted-average amortization period (in years) for acquired intangible assets	8 years

Acquired Intangible Assets - 53

Acquired Intangible Assets - Calculation Of Estimated Future Amortization Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
2018 (three months ended June 30)	$ 94,776
2,019	352,401
2,020	280,888
2,021	190,763
2,022	177,208
2023 and beyond	295,377
Total	$ 1,391,413	$ 1,472,542

Other Assets (Details)

Other Assets (Details) - USD ($)	Mar. 31, 2018	Jun. 30, 2017
Other Assets, Noncurrent Disclosure [Abstract]
Deposits and restricted cash	$ 11,479,000	$ 15,821,000
Deferred implementation costs	28,916,000	28,833,000
Investments	36,776,000	27,886,000
Marketable securities	0	3,023,000
Long-term prepaid expenses and other long-term assets	22,561,000	18,200,000
Total other assets	$ 99,732,000	$ 93,763,000

Other Assets - Additional Infor

Other Assets - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017
Schedule of Equity Method Investments [Line Items]
Income (loss) from equity method investments	$ (300,000)	$ 200,000	$ (503,000)	$ 6,153,000
Marketable securities	$ 0		$ 0		$ 3,023,000
Minimum
Schedule of Equity Method Investments [Line Items]
Ownership percentage	4.00%		4.00%
Maximum
Schedule of Equity Method Investments [Line Items]
Ownership percentage	20.00%		20.00%

Deferred Charges and Credits (D

Deferred Charges and Credits (Details)	9 Months Ended
	Mar. 31, 2018
Minimum
Schedule of Deferred Charges and Credits [Line Items]
Deferred charges and credits amortization, period	6 years
Maximum
Schedule of Deferred Charges and Credits [Line Items]
Deferred charges and credits amortization, period	15 years

Accounts Payable and Accrued 57

Accounts Payable and Accrued Liabilities - Schedule of Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Accounts Payable and Accrued Liabilities [Abstract]
Accounts payable—trade	$ 39,283	$ 43,699
Accrued salaries and commissions	103,245	121,958
Accrued liabilities	118,628	135,512
Accrued interest on Senior Notes	26,021	24,787
Amounts payable in respect of restructuring and other Special charges	5,000	13,728
Asset retirement obligations	2,988	2,436
Total	$ 295,165	$ 342,120

Accounts Payable and Accrued 58

Accounts Payable and Accrued Liabilities - Schedule of Long-Term Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Accounts Payable and Accrued Liabilities [Abstract]
Amounts payable in respect of restructuring and other Special charges	$ 2,124	$ 2,686
Other accrued liabilities	37,164	36,702
Asset retirement obligations	13,400	10,950
Total	$ 52,688	$ 50,338

Accounts Payable and Accrued 59

Accounts Payable and Accrued Liabilities - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2018	Jun. 30, 2017
Accounts Payable and Accrued Liabilities [Abstract]
Present value of asset retirement obligation	$ 16.4	$ 13.4
Undiscounted value of asset retirement obligation	$ 18.5	$ 15

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Debt Instrument [Line Items]
Total debt	$ 2,691,300	$ 2,597,120
Premium on Senior Notes 2026	6,164	6,597
Debt issuance costs	(29,382)	(33,900)
Total amount outstanding	2,668,082	2,569,817
Less:
Current portion of long-term debt	282,760	182,760
Non-current portion of long-term debt	2,385,322	2,387,057
Term Loan B
Debt Instrument [Line Items]
Total debt	766,300	772,120
Less:
Current portion of long-term debt	7,760	7,760
Senior Notes | Senior Notes 2026
Debt Instrument [Line Items]
Total debt	850,000	850,000
Senior Notes | Senior Notes 2023
Debt Instrument [Line Items]
Total debt	800,000	800,000
Line of Credit | Revolver
Debt Instrument [Line Items]
Total debt	275,000	175,000
Less:
Current portion of long-term debt	$ 275,000	$ 175,000

Long-Term Debt - Senior Unsecur

Long-Term Debt - Senior Unsecured Fixed Rate Notes (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017	Dec. 20, 2016	May 31, 2016	Jan. 15, 2015
Debt Instrument [Line Items]
Long-term debt	$ 2,691,300,000		$ 2,691,300,000		$ 2,597,120,000
Senior Notes | Senior Notes 2026
Debt Instrument [Line Items]
Debt instrument face amount						$ 250,000,000	$ 600,000,000
Debt instrument stated interest rate							5.875%
Debt premium issue price percentage						102.75%
Long-term debt	850,000,000		850,000,000		850,000,000
Interest expense	12,500,000	$ 12,500,000	37,500,000	$ 30,700,000
Senior Notes | Senior Notes 2023
Debt Instrument [Line Items]
Debt instrument face amount								$ 800,000,000
Debt instrument stated interest rate								5.625%
Long-term debt	800,000,000		800,000,000		$ 800,000,000
Interest expense	$ 11,200,000	$ 11,200,000	$ 33,700,000	$ 33,700,000

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Details) - USD ($)	Jan. 16, 2014	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017
Debt Instrument [Line Items]
Long-term debt		$ 2,691,300,000		$ 2,691,300,000		$ 2,597,120,000
Revolver | Line of Credit
Debt Instrument [Line Items]
Credit agreement, maximum capacity		$ 450,000,000		$ 450,000,000
Effective interest rate percentage		3.55%		3.55%
Interest expense		$ 2,700,000	$ 1,300,000	$ 7,300,000	$ 1,300,000
Proceeds from line of credit		0	225,000,000	200,000,000	225,000,000
Repayments of debt		100,000,000	0	100,000,000	0
Long-term debt		$ 275,000,000		$ 275,000,000		175,000,000
Revolver | Line of Credit | LIBOR | Minimum
Debt Instrument [Line Items]
Interest addition to floating rate				1.25%
Revolver | Line of Credit | LIBOR | Maximum
Debt Instrument [Line Items]
Interest addition to floating rate				1.75%
Term Loan B
Debt Instrument [Line Items]
Credit agreement, maximum capacity	$ 800,000,000
Term loan period, years	7 years
Term loan quarterly repayment as percentage of principal	0.25%
Effective interest rate percentage		3.65%		3.65%
Interest expense		$ 6,900,000	$ 6,000,000	$ 19,700,000	$ 19,000,000
Long-term debt		$ 766,300,000		$ 766,300,000		$ 772,120,000
Term Loan B | LIBOR
Debt Instrument [Line Items]
Interest addition to floating rate				2.00%

Pension Plans and Other Post 63

Pension Plans and Other Post Retirement Benefits - Schedule of Defined Benefit Plans and Long-Term Employee Benefit Obligations (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Assumptions:
Total benefit obligation	$ 64,998	$ 60,362
Current portion of benefit obligation	2,002	1,735
Non-current portion of benefit obligation	62,996	58,627
Pension Plan | CDT
Assumptions:
Total benefit obligation	31,700	28,881
Current portion of benefit obligation	688	583
Non-current portion of benefit obligation	31,012	28,298
Pension Plan | GXS Germany
Assumptions:
Total benefit obligation	25,873	23,730
Current portion of benefit obligation	1,035	926
Non-current portion of benefit obligation	24,838	22,804
Pension Plan | GXS Philippines
Assumptions:
Total benefit obligation	3,801	4,495
Current portion of benefit obligation	102	81
Non-current portion of benefit obligation	3,699	4,414
Other plans
Assumptions:
Total benefit obligation	3,624	3,256
Current portion of benefit obligation	177	145
Non-current portion of benefit obligation	$ 3,447	$ 3,111

Pension Plans and Other Post 64

Pension Plans and Other Post Retirement Benefits - Additional Information (Details) - Pension Plan	9 Months Ended
	Mar. 31, 2018USD ($)
CDT
Assumptions:
Contributions made by employer to plan	$ 0
Amount to be amortized from accumulated other comprehensive income (loss) over the next fiscal year	100,000
GXS Germany
Assumptions:
Contributions made by employer to plan	0
Amount to be amortized from accumulated other comprehensive income (loss) over the next fiscal year	19,000
GXS Philippines
Assumptions:
Contributions made by employer to plan	0
Amount to be amortized from accumulated other comprehensive income (loss) over the next fiscal year	59,000
Fair value of plan assets	$ 32,000

Pension Plans and Other Post 65

Pension Plans and Other Post Retirement Benefits - Schedule of the Change in Benefit Obligation (Details) - Pension Plan - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation—beginning of period			$ 57,106	$ 61,520	$ 61,520
Service cost	$ 463	$ 408	1,393	1,477	1,913
Interest cost	347	257	1,005	790	1,059
Benefits paid			(1,246)		(1,329)
Actuarial (gain) loss			(1,692)		(6,984)
Foreign exchange (gain) loss			4,808		927
Benefit obligation—end of period	61,374		61,374		57,106
Less: Current portion	(1,825)		(1,825)		(1,590)
Non-current portion of benefit obligation	59,549		59,549		55,516
CDT
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation—beginning of period			28,881	29,450	29,450
Service cost	130	115	379	347	467
Interest cost	158	113	459	339	456
Benefits paid			(428)		(469)
Actuarial (gain) loss			(327)		(1,708)
Foreign exchange (gain) loss			2,736		685
Benefit obligation—end of period	31,700		31,700		28,881
Less: Current portion	(688)		(688)		(583)
Non-current portion of benefit obligation	31,012		31,012		28,298
GXS Germany
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation—beginning of period			23,730	24,729	24,729
Service cost	123	97	357	292	395
Interest cost	127	93	370	279	377
Benefits paid			(736)		(807)
Actuarial (gain) loss			(96)		(1,548)
Foreign exchange (gain) loss			2,248		584
Benefit obligation—end of period	25,873		25,873		23,730
Less: Current portion	(1,035)		(1,035)		(926)
Non-current portion of benefit obligation	24,838		24,838		22,804
GXS Philippines
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation—beginning of period			4,495	7,341	7,341
Service cost	210	196	657	838	1,051
Interest cost	62	$ 51	176	$ 172	226
Benefits paid			(82)		(53)
Actuarial (gain) loss			(1,269)		(3,728)
Foreign exchange (gain) loss			(176)		(342)
Benefit obligation—end of period	3,801		3,801		4,495
Less: Current portion	(102)		(102)		(81)
Non-current portion of benefit obligation	$ 3,699		$ 3,699		$ 4,414

Pension Plans and Other Post 66

Pension Plans and Other Post Retirement Benefits - Components of Net Pension Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017
Assumptions:
Net pension expense			$ 2,834	$ 2,953
Pension Plan
Assumptions:
Service cost	$ 463	$ 408	1,393	1,477	$ 1,913
Interest cost	347	257	1,005	790	1,059
Amortization of actuarial (gains) and losses	101	185	282	554
Net pension expense	911	850	2,680	2,821
Pension Plan | CDT
Assumptions:
Service cost	130	115	379	347	467
Interest cost	158	113	459	339	456
Amortization of actuarial (gains) and losses	141	155	409	465
Net pension expense	429	383	1,247	1,151
Pension Plan | GXS Germany
Assumptions:
Service cost	123	97	357	292	395
Interest cost	127	93	370	279	377
Amortization of actuarial (gains) and losses	19	42	55	125
Net pension expense	269	232	782	696
Pension Plan | GXS Philippines
Assumptions:
Service cost	210	196	657	838	1,051
Interest cost	62	51	176	172	$ 226
Amortization of actuarial (gains) and losses	(59)	(12)	(182)	(36)
Net pension expense	$ 213	$ 235	$ 651	$ 974

Pension Plans and Other Post 67

Pension Plans and Other Post Retirement Benefits - Schedule of Weighted-Average Key Assumptions Used for Pension Plans (Details) - Pension Plan	9 Months Ended	12 Months Ended
	Mar. 31, 2018	Jun. 30, 2017
CDT
Assumptions:
Salary increases	2.00%	2.00%
Pension increases	1.75%	1.75%
Discount rate	2.05%	2.00%
Normal retirement age	65 years	65 years
CDT | to age 20
Assumptions:
Employee fluctuation rate	0.00%	0.00%
CDT | to age 25
Assumptions:
Employee fluctuation rate	0.00%	0.00%
CDT | to age 30
Assumptions:
Employee fluctuation rate	1.00%	1.00%
CDT | to age 35
Assumptions:
Employee fluctuation rate	0.50%	0.50%
CDT | to age 40
Assumptions:
Employee fluctuation rate	0.00%	0.00%
CDT | to age 45
Assumptions:
Employee fluctuation rate	0.50%	0.50%
CDT | to age 50
Assumptions:
Employee fluctuation rate	0.50%	0.50%
CDT | from age 51
Assumptions:
Employee fluctuation rate	1.00%	1.00%
GXS Germany
Assumptions:
Salary increases	2.00%	2.00%
Pension increases	2.00%	2.00%
Discount rate	2.05%	2.00%
GXS Germany | to age 20
Assumptions:
Employee fluctuation rate	0.00%	0.00%
GXS Germany | to age 25
Assumptions:
Employee fluctuation rate	0.00%	0.00%
GXS Germany | to age 30
Assumptions:
Employee fluctuation rate	0.00%	0.00%
GXS Germany | to age 35
Assumptions:
Employee fluctuation rate	0.00%	0.00%
GXS Germany | to age 40
Assumptions:
Employee fluctuation rate	0.00%	0.00%
GXS Germany | to age 45
Assumptions:
Employee fluctuation rate	0.00%	0.00%
GXS Germany | to age 50
Assumptions:
Employee fluctuation rate	0.00%	0.00%
GXS Germany | from age 51
Assumptions:
Employee fluctuation rate	0.00%	0.00%
GXS Germany | Minimum
Assumptions:
Normal retirement age	65 years	65 years
GXS Germany | Maximum
Assumptions:
Normal retirement age	67 years	67 years
GXS Philippines
Assumptions:
Salary increases	6.20%	6.20%
Discount rate	7.00%	5.00%
Normal retirement age	60 years	60 years
GXS Philippines | to age 20
Assumptions:
Employee fluctuation rate	12.19%	12.19%
GXS Philippines | to age 25
Assumptions:
Employee fluctuation rate	16.58%	16.58%
GXS Philippines | to age 30
Assumptions:
Employee fluctuation rate	13.97%	13.97%
GXS Philippines | to age 35
Assumptions:
Employee fluctuation rate	10.77%	10.77%
GXS Philippines | to age 40
Assumptions:
Employee fluctuation rate	7.39%	7.39%
GXS Philippines | to age 45
Assumptions:
Employee fluctuation rate	3.28%	3.28%
GXS Philippines | to age 50
Assumptions:
Employee fluctuation rate	0.00%	0.00%
GXS Philippines | from age 51
Assumptions:
Employee fluctuation rate	0.00%	0.00%

Pension Plans and Other Post 68

Pension Plans and Other Post Retirement Benefits - Anticipated Pension Payments Under Pension Plans (Details) - Pension Plan $ in Thousands	Mar. 31, 2018USD ($)
CDT
Assumptions:
2018 (three months ended June 30)	$ 159
2,019	706
2,020	760
2,021	858
2,022	945
2023 to 2027	5,912
Total	9,340
GXS Germany
Assumptions:
2018 (three months ended June 30)	253
2,019	1,042
2,020	1,050
2,021	1,095
2,022	1,106
2023 to 2027	5,895
Total	10,441
GXS Philippines
Assumptions:
2018 (three months ended June 30)	25
2,019	115
2,020	154
2,021	194
2,022	297
2023 to 2027	2,056
Total	$ 2,841

Share Capital, Option Plans a69

Share Capital, Option Plans and Share-Based Payments - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Dividends declared per common share (in dollars per share)	$ 0.132000	$ 0.115000	$ 0.396	$ 0.345000
Payments of dividends	$ 35,200	$ 30,300	$ 104,996	$ 85,953
Preference shares issued (in shares)	0		0
Common shares repurchased (in shares)			0	123,785
Purchase of Treasury Stock			$ 0	$ 4,245
Issuance of treasury stock (in shares)	20,000	44,000	407,443	393,922

Share Capital, Option Plans a70

Share Capital, Option Plans and Share-Based Payments - Schedule of Share-Based Payments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 5,080	$ 6,661	$ 20,473	$ 22,373
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	983	2,365	7,014	9,040
Deferred Stock Units (Directors)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	701	558	2,193	1,899
Employee Share Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	911	705	2,733	1,711
Long Term Incentive Plan | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	1,588	1,573	4,987	4,940
Long Term Incentive Plan | Performance Stock Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	751	926	2,723	2,754
Other plans | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 146	$ 534	$ 823	$ 2,029

Share Capital, Option Plans a71

Share Capital, Option Plans and Share-Based Payments - Summary of Outstanding Stock Options, Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)	6,846,680		6,846,680		8,977,830
Cash used to settle awards			$ 0	$ 0
Capitalized amount of share-based compensation costs			0	0
Cash proceeds from exercise of options granted	$ 30,500,000	$ 12,200,000	50,100,000	16,700,000
Tax benefit realized from exercise of options	$ 600,000	$ 1,500,000	$ 900,000	$ 1,900,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)	6,846,680		6,846,680
Common shares available for issuance (in shares)	11,311,338		11,311,338
Expiration period of options, minimum term			7 years
Expiration period of options, maximum term			10 years
Unrecognized compensation cost relating to unvested stock awards	$ 18,500,000		$ 18,500,000
Unvested stock awards compensation cost, weighted average recognition period			2 years 4 months 17 days
Stock Options | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Stock Options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			5 years

Share Capital, Option Plans a72

Share Capital, Option Plans and Share-Based Payments - Schedule of Outstanding Stock Options Activity (Details) $ / shares in Units, $ in Thousands	9 Months Ended
	Mar. 31, 2018USD ($)$ / sharesshares
Options
Outstanding at beginning of period (in shares) | shares	8,977,830
Granted (in shares) | shares	848,830
Exercised (in shares) | shares	(2,683,814)
Forfeited or expired (in shares) | shares	(296,166)
Outstanding at end of period (in shares) | shares	6,846,680
Exercisable ending balance (in shares) | shares	2,303,668
Weighted- Average Exercise Price
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 24.57
Granted (in dollars per share) | $ / shares	34.55
Exercised (in dollars per share) | $ / shares	18.68
Forfeited or expired (in dollars per share) | $ / shares	30.48
Outstanding at end of period (in dollars per share) | $ / shares	27.86
Exercisable at end of period (in dollars per share) | $ / shares	$ 23.91
Weighted- Average Remaining Contractual Term (years)
Outstanding (in years)	4 years 5 months 24 days
Exercisable (in years)	3 years 2 months 19 days
Aggregate Intrinsic Value ($’000s)
Outstanding | $	$ 47,591
Exercisable | $	$ 25,095

Share Capital, Option Plans a73

Share Capital, Option Plans and Share-Based Payments - Schedule of Weighted-Average Fair Value Of Options And Weighted-Average Assumptions Used (Details) - $ / shares	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Weighted-average fair value of options granted (in dollars per share)	$ 8.14	$ 7.32	$ 7.48	$ 6.86
Weighted-average assumptions used:
Expected volatility	26.95%	27.64%	27.10%	28.61%
Risk–free interest rate	2.44%	1.70%	1.83%	1.32%
Expected dividend yield	1.45%	1.37%	1.45%	1.42%
Expected life (in years)	4 years 3 months 30 days	4 years 4 months 2 days	4 years 5 months 1 day	4 years 3 months 29 days
Forfeiture rate (based on historical rates)	6.00%	5.00%	6.00%	5.00%
Average exercised share price (in dollars per share)	$ 36.50	$ 33.48	$ 34.55	$ 31.34

Share Capital, Option Plans a74

Share Capital, Option Plans and Share-Based Payments - Long-Term Incentive Plans (Details) - Long Term Incentive Plan $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2018USD ($)shares	Mar. 31, 2018USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of plan		3 years
Stock issued (in shares) | shares	312,651
Stock issued	$ 6.7
Compensation cost related to unvested awards not yet recognized	$ 15.2	$ 15.2
Unvested stock awards compensation cost, weighted average recognition period		1 year 11 months 1 day

Share Capital, Option Plans a75

Share Capital, Option Plans and Share-Based Payments - RSU's, DSU's and ESPP (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of treasury stock (in shares)	20,000	44,000	407,443	393,922
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)	0	0	4,464	7,800
Award vesting period			3 years
Issuance of treasury stock (in shares)	20,000	44,000	94,792	54,000
Stock issued	$ 0.4	$ 1	$ 2	$ 1.1
Deferred Stock Units (DSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)	3,037	2,302	83,846	77,998
Employee Share Purchase Plan (ESPP)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards purchase price discount			15.00%
Common shares eligible for issuance (in shares)	201,726	129,579	540,343	349,435
Cash received from employee stock purchase plan	$ 5.8	$ 3.8	$ 15.9	$ 10

Guarantees and Contingencies -

Guarantees and Contingencies - Schedule of Contractual Obligations with Minimum Payments (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Long term debt obligations
Total	$ 3,424,525
April 1, 2018— June 30, 2018	186,654
July 1, 2018— June 30, 2020	389,329
July 1, 2020— June 30, 2022	953,792
July 1, 2022 and beyond	1,894,750
Operating lease obligations
Total	397,539
April 1, 2018— June 30, 2018	20,530
July 1, 2018— June 30, 2020	140,044
July 1, 2020— June 30, 2022	105,496
July 1, 2022 and beyond	131,469
Purchase obligations
Total	17,867
April 1, 2018— June 30, 2018	2,622
July 1, 2018— June 30, 2020	14,439
July 1, 2020— June 30, 2022	806
July 1, 2022 and beyond	0
Total payments due between
Total	3,839,931
April 1, 2018— June 30, 2018	209,806
July 1, 2018— June 30, 2020	543,812
July 1, 2020— June 30, 2022	1,060,094
July 1, 2022 and beyond	2,026,219
Debt Instrument [Line Items]
Current portion of long-term debt	282,760	$ 182,760
Sublease income	8,600
Revolver | Line of Credit
Debt Instrument [Line Items]
Current portion of long-term debt	$ 275,000	$ 175,000

Guarantees and Contingencies 77

Guarantees and Contingencies - Additional Information (Details) - USD ($) $ in Millions	Oct. 01, 2017	Jul. 17, 2015	Mar. 31, 2018
Loss Contingencies [Line Items]
Estimated amount of loss resulting from an adverse tax position			$ 605
GXS Group, Inc.
Loss Contingencies [Line Items]
Loss contingency accrual			1.8
GXS Group, Inc. | Municipality of Sao Paulo
Loss Contingencies [Line Items]
Payments for legal settlements	$ 1.4
GXS India
Loss Contingencies [Line Items]
Loss contingency accrual			1.4
Internal Revenue Service (IRS) | Tax Year 2010
Loss Contingencies [Line Items]
Estimated amount of loss resulting from an adverse tax position		$ 280
Additional tax expense, as a percent		20.00%
Internal Revenue Service (IRS) | Tax Year 2012
Loss Contingencies [Line Items]
Estimated amount of loss resulting from an adverse tax position			80
Canada Revenue Agency (CRA) | Tax Year 2012
Loss Contingencies [Line Items]
Income tax examination, estimate of increase to taxable income			$ 90
Additional tax expense, as a percent			10.00%

Income Taxes - Interest and Pen

Income Taxes - Interest and Penalties Related to Liabilities for Income Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Interest expense	$ 18	$ 1,673	$ 3,915	$ 4,456
Penalties expense (recoveries)	453	6	(90)	(318)
Total	$ 471	$ 1,679	$ 3,825	$ 4,138

Income Taxes - Interest Accrued

Income Taxes - Interest Accrued and Penalties Accrued Related to Income Tax Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Interest expense accrued	$ 52,094	$ 47,402
Penalties accrued	$ 2,325	$ 2,160

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Sep. 30, 2016	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Possible decrease in tax expense in next 12 months	$ 7.5			$ 7.5
Taxes paid on cash distribution	$ 28.3			$ 28.3		$ 22.1
Effective income tax rate	25.50%	37.90%		35.80%	(496.30%)
Increase in income tax expense	$ 6.9			$ 916
Impact of changes in US tax legislation	4.7			20
Increase in income tax expense of federal rate applied to pretax income	8.2			25.3
Increase (decrease) in differences in tax filings from provision	1.4			(1.2)
Decrease from reversal of reserves	5.7			0.5
Decrease in deferred tax assets valuation allowance, amount	1.2			3.3
Income tax benefit from reorganization			$ 876.1		$ 876.1
Adjustment of deferred tax assets and liabilities	$ 4.7			$ 20
Impact of changes in US tax legislation, as a percent	6.00%			7.10%

Fair Value Measurement - Schedu

Fair Value Measurement - Schedule of Financial Assets and Liabilities (Details) - USD ($)	Mar. 31, 2018	Jun. 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$ 0	$ 3,023,000
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities		3,023,000
Derivative financial instrument asset (note 16)	0	1,174,000
Financial Assets	0	4,197,000
Derivative financial instrument liability (note 16)	(618,000)	0
Financial Liabilities	(618,000)	0
Fair Value, Measurements, Recurring | Significant other observable inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities		3,023,000
Derivative financial instrument asset (note 16)	0	1,174,000
Financial Assets	0	4,197,000
Derivative financial instrument liability (note 16)	(618,000)	0
Financial Liabilities	$ (618,000)	$ 0

Fair Value Measurement - Assets

Fair Value Measurement - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($)	9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Assets, Level 1 to Level 2 transfers	$ 0	$ 0
Liabilities, Level 1 to Level 2 transfers	0	0
Assets, Level 2 to Level 1 transfers	0	0
Liabilities, Level 2 to Level 1 transfers	0	0
Asset transfers into Level 3	0	0
Liability transfers into Level 3	0	0
Asset transfers out of Level 3	0	0
Liability transfers out of Level 3	$ 0	$ 0

Fair Value Measurement - Summar

Fair Value Measurement - Summary of Long-term Investments (Details) $ in Thousands	Jun. 30, 2017USD ($)
Fair Value Disclosures [Abstract]
Cost	$ 2,406
Gross Unrealized Gains	617
Gross Unrealized (Losses)	0
Estimated Fair Value	$ 3,023

Derivative Instruments and He84

Derivative Instruments and Hedging Activities - Fair Value in the Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2018	Jun. 30, 2017
Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Notional amount of forward contracts held to sell U.S. dollars in exchange for Canadian dollars	$ 47,300	$ 39,000
Prepaid expenses and other current assets | Cash Flow Hedging | Designated As Hedging Instrument | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Fair Value Asset (Liability)		$ 1,174
Accounts Payable and Accrued Liabilities | Cash Flow Hedging | Designated As Hedging Instrument | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Fair Value Asset (Liability)	$ (618)
Minimum
Derivatives, Fair Value [Line Items]
Contract maturity	1 month
Maximum
Derivatives, Fair Value [Line Items]
Contract maturity	12 months

Derivative Instruments and He85

Derivative Instruments and Hedging Activities - Effects on Income and Other Comprehensive Income (OCI) (Details) - Cash Flow Hedging - Foreign currency forward contracts - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Derivatives, Fair Value [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	$ (1,273)	$ 473	$ 247	$ (960)
Amount of Gain or (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	0	0	0	0
Operating Expenses
Derivatives, Fair Value [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	$ 423	$ (54)	$ 2,039	$ 92

Special Charges (Recoveries) -

Special Charges (Recoveries) - Schedule of Special Charges Related to Restructuring Plan (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Restructuring Cost and Reserve [Line Items]
Acquisition-related costs	$ 1,172	$ 4,639	$ 4,625	$ 15,305
Other charges (recoveries)	390	(2,873)	3,651	9,980
Total	2,644	20,586	21,390	44,157
Fiscal 2018 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Special charges	553	0	8,907	0
Fiscal 2017 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Special charges	525	18,888	3,947	20,744
Restructuring Plans prior to Fiscal 2017 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Special charges	$ 4	$ (68)	$ 260	$ (1,872)

Special Charges (Recoveries) 87

Special Charges (Recoveries) - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Restructuring Cost and Reserve [Line Items]
Acquisition-related costs	$ 1,172	$ 4,639	$ 4,625	$ 15,305
Other charges (recoveries)	390	(2,873)	3,651	9,980
Special Charges
Restructuring Cost and Reserve [Line Items]
Acquisition-related costs	1,200	4,600	4,600	15,300
One-time ERP Implementation Project
Restructuring Cost and Reserve [Line Items]
Other charges (recoveries)	0	2,600	3,500	7,300
System Implementation Costs
Restructuring Cost and Reserve [Line Items]
Other charges (recoveries)	1,700		1,700
Miscellaneous Other Charges
Restructuring Cost and Reserve [Line Items]
Other charges (recoveries)	900		3,000
Pre-Acquisition Tax Liabilities being Settled, Released, or Statute Barred
Restructuring Cost and Reserve [Line Items]
Other charges (recoveries)	(2,200)	(1,300)	(2,200)	(3,800)
Pre-acquisition Sales and Use Tax Liabilities
Restructuring Cost and Reserve [Line Items]
Other charges (recoveries)			(2,300)
Commitment Fees
Restructuring Cost and Reserve [Line Items]
Other charges (recoveries)		(2,700)		6,500
Interest on Certain Pre-Acquisition Liabilities
Restructuring Cost and Reserve [Line Items]
Other charges (recoveries)		$ (1,600)		(1,400)
Post-Acquisition Integration Costs
Restructuring Cost and Reserve [Line Items]
Other charges (recoveries)				$ 1,200
Fiscal 2018 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs	12,000		12,000
Special charges recorded to date	8,900		8,900
Fiscal 2017 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs	45,000		45,000
Special charges recorded to date	$ 37,500		$ 37,500

Special Charges (Recoveries) 88

Special Charges (Recoveries) - Schedule of Restructuring Reserve (Details) $ in Thousands	9 Months Ended
	Mar. 31, 2018USD ($)
Fiscal 2018 Restructuring Plan
Restructuring Reserve [Roll Forward]
Balance payable as at June 30, 2017	$ 0
Accruals and adjustments	8,907
Cash payments	(8,824)
Foreign exchange and other non-cash adjustments	827
Balance payable as at March 31, 2018	910
Fiscal 2018 Restructuring Plan | Workforce Reduction
Restructuring Reserve [Roll Forward]
Balance payable as at June 30, 2017	0
Accruals and adjustments	7,977
Cash payments	(8,637)
Foreign exchange and other non-cash adjustments	912
Balance payable as at March 31, 2018	252
Fiscal 2018 Restructuring Plan | Facility Costs
Restructuring Reserve [Roll Forward]
Balance payable as at June 30, 2017	0
Accruals and adjustments	930
Cash payments	(187)
Foreign exchange and other non-cash adjustments	(85)
Balance payable as at March 31, 2018	658
Fiscal 2017 Restructuring Plan
Restructuring Reserve [Roll Forward]
Balance payable as at June 30, 2017	11,414
Accruals and adjustments	3,947
Cash payments	(13,380)
Foreign exchange and other non-cash adjustments	571
Balance payable as at March 31, 2018	2,552
Fiscal 2017 Restructuring Plan | Workforce Reduction
Restructuring Reserve [Roll Forward]
Balance payable as at June 30, 2017	10,045
Accruals and adjustments	3,371
Cash payments	(12,068)
Foreign exchange and other non-cash adjustments	590
Balance payable as at March 31, 2018	1,938
Fiscal 2017 Restructuring Plan | Facility Costs
Restructuring Reserve [Roll Forward]
Balance payable as at June 30, 2017	1,369
Accruals and adjustments	576
Cash payments	(1,312)
Foreign exchange and other non-cash adjustments	(19)
Balance payable as at March 31, 2018	$ 614

Acquisitions - Acquisition of H

Acquisitions - Acquisition of Hightail, Inc. (Details) - USD ($)	Feb. 14, 2018	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017
Business Acquisition [Line Items]
Goodwill		$ 3,592,598,000		$ 3,592,598,000		$ 3,416,749,000
Acquisition-related costs		1,172,000	$ 4,639,000	4,625,000	$ 15,305,000
Hightail, Inc
Business Acquisition [Line Items]
Purchase consideration	$ 20,500,000
Goodwill	7,127,000
Goodwill expected to be tax deductible	0
Deferred revenue	5,200,000
Deferred revenue adjustment	2,000,000
Acquired receivables, fair value	700,000
Acquired receivables, gross contractual amount	800,000
Acquired receivables, estimated uncollectible	$ 100,000
Acquisition-related costs		$ 500,000		$ 500,000

Acquisitions - Acquisition of90

Acquisitions - Acquisition of Hightail, Inc., Preliminary Purchase Price Allocation (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Feb. 14, 2018	Jun. 30, 2017
Business Acquisition [Line Items]
Goodwill	$ 3,592,598		$ 3,416,749
Hightail, Inc
Business Acquisition [Line Items]
Current assets		$ 1,327
Non-current tangible assets		1,265
Liabilities assumed		(6,353)
Total identifiable net assets		13,339
Goodwill		7,127
Net assets acquired		20,466
Hightail, Inc | Customer assets
Business Acquisition [Line Items]
Acquired intangible assets		12,900
Hightail, Inc | Technology assets
Business Acquisition [Line Items]
Acquired intangible assets		$ 4,200

Acquisitions - Acquisition of G

Acquisitions - Acquisition of Guidance Software (Details) - USD ($) $ in Thousands	Sep. 14, 2017	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Aug. 31, 2017	Jun. 30, 2017
Purchase Price Allocation
Goodwill		$ 3,592,598		$ 3,592,598			$ 3,416,749
Acquisition-related costs		1,172	$ 4,639	4,625	$ 15,305
Guidance Software Inc.
Business Acquisition [Line Items]
Purchase consideration	$ 240,538
Business Combination, Consideration Transferred [Abstract]
Cash consideration	237,291
Guidance shares already owned by OpenText through open market purchases (at fair value)	3,247
Preliminary purchase consideration	240,538
Purchase Price Allocation
Current assets	25,253
Non-current tangible assets	10,540
Liabilities assumed	(48,670)
Total identifiable net assets	110,204
Goodwill	130,334
Net assets acquired	240,538
Cash acquired from acquisition	5,700
Goodwill expected to be tax deductible	1,900
Deferred revenue	26,600
Deferred revenue adjustment	7,600
Acquired receivables, fair value	10,300
Acquired receivables, gross contractual amount	11,800
Acquired receivables, estimated uncollectible	1,500
Remeasurement gain				800
Acquisition-related costs		400		2,700
Guidance Software Inc. | Appraisal Proceedings
Business Acquisition [Line Items]
Loss contingency accrual		$ 2,300		$ 2,300		$ 10,800
Guidance Software Inc. | Customer assets
Purchase Price Allocation
Acquired intangible assets	71,230
Guidance Software Inc. | Technology assets
Purchase Price Allocation
Acquired intangible assets	$ 51,851

Acquisitions - Appraisal Procee

Acquisitions - Appraisal Proceedings (Details) - Appraisal Proceedings - Guidance Software Inc. - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2018	Aug. 31, 2017
Business Acquisition [Line Items]
Shares outstanding at acquisition (in shares)		1,519,569
Percent of shares outstanding		5.00%
Loss contingency accrual	$ 2.3	$ 10.8
Share price (in dollars per share)		$ 7.10
Payments for legal settlements	$ 8.5

Acquisitions - Acquisition of C

Acquisitions - Acquisition of Covisint Corporation (Details) - USD ($) $ in Thousands	Jul. 26, 2017	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017
Purchase Price Allocation
Goodwill		$ 3,592,598		$ 3,592,598		$ 3,416,749
Acquisition-related costs		1,172	$ 4,639	4,625	$ 15,305
Covisint Corporation
Business Acquisition [Line Items]
Purchase consideration	$ 102,800
Purchase Price Allocation
Current assets	41,586
Non-current tangible assets	3,426
Liabilities assumed	(23,033)
Total identifiable net assets	75,879
Goodwill	26,905
Net assets acquired	102,784
Cash acquired from acquisition	31,500
Goodwill expected to be tax deductible	26,800
Deferred revenue	12,200
Deferred revenue adjustment	4,600
Acquired receivables, fair value	7,800
Acquired receivables, gross contractual amount	7,900
Acquired receivables, estimated uncollectible	100
Acquisition-related costs		$ 0		$ 900
Covisint Corporation | Customer assets
Purchase Price Allocation
Acquired intangible assets	36,600
Covisint Corporation | Technology assets
Purchase Price Allocation
Acquired intangible assets	$ 17,300

Acquisitions - Purchase of an A

Acquisitions - Purchase of an Asset Group Constituting a Business - ECD Business (Details) - USD ($) $ in Thousands	Jan. 23, 2017	Mar. 31, 2018	Jun. 30, 2017
Purchase Price Allocation
Goodwill		$ 3,592,598	$ 3,416,749
ECD Business
Business Acquisition [Line Items]
Purchase consideration	$ 1,620,000
Purchase Price Allocation
Current assets	11,339
Non-current tangible assets	103,672
Liabilities assumed	(182,301)
Total identifiable net assets	798,710
Goodwill	823,684
Net assets acquired	1,622,394
Goodwill expected to be tax deductible	378,500
Deferred revenue	163,800
Deferred revenue adjustment	52,000
Contract assets acquired	8,400
ECD Business | Customer assets
Purchase Price Allocation
Acquired intangible assets	407,000
ECD Business | Technology assets
Purchase Price Allocation
Acquired intangible assets	$ 459,000

Acquisitions - Purchase of an95

Acquisitions - Purchase of an Asset Group Constituting a Business - CCM Business (Details) - USD ($) $ in Thousands	Jul. 31, 2016	Mar. 31, 2018	Jun. 30, 2017
Purchase Price Allocation
Goodwill		$ 3,592,598	$ 3,416,749
CCM Business
Business Acquisition [Line Items]
Purchase consideration	$ 315,000
Purchase Price Allocation
Current assets	683
Non-current deferred tax asset	11,861
Non-current tangible assets	2,348
Liabilities assumed	(38,090)
Total identifiable net assets	141,802
Goodwill	173,198
Net assets acquired	315,000
Goodwill expected to be tax deductible	105,100
CCM Business | Customer assets
Purchase Price Allocation
Acquired intangible assets	64,000
CCM Business | Technology assets
Purchase Price Allocation
Acquired intangible assets	$ 101,000

Acquisitions - Acquisition of R

Acquisitions - Acquisition of Recommind, Inc. (Details) - USD ($)	Jul. 20, 2016	Mar. 31, 2018	Jun. 30, 2017
Purchase Price Allocation
Goodwill		$ 3,592,598,000	$ 3,416,749,000
Recommind Inc
Business Acquisition [Line Items]
Purchase consideration	$ 170,100,000
Purchase Price Allocation
Current assets	30,034,000
Non-current tangible assets	1,245,000
Long-term deferred tax liabilities	(1,780,000)
Other liabilities assumed	(27,497,000)
Total identifiable net assets	78,702,000
Goodwill	91,405,000
Net assets acquired	170,107,000
Goodwill expected to be tax deductible	0
Acquired receivables, fair value	28,700,000
Acquired receivables, gross contractual amount	29,600,000
Acquired receivables, estimated uncollectible	900,000
Recommind Inc | Customer assets
Purchase Price Allocation
Acquired intangible assets	51,900,000
Recommind Inc | Technology assets
Purchase Price Allocation
Acquired intangible assets	$ 24,800,000

Supplemental Cash Flow Disclo97

Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Supplemental Cash Flow Information [Abstract]
Cash paid during the period for interest	$ 32,489	$ 29,889	$ 97,353	$ 83,474
Cash received during the period for interest	332	1,164	873	2,634
Cash paid during the period for income taxes	$ 23,654	$ 21,146	$ 52,488	$ 60,828

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended			9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Sep. 30, 2016	Mar. 31, 2018	Mar. 31, 2017
Basic earnings per share
Net income attributable to OpenText	$ 58,794	$ 21,616		$ 180,501	$ 979,522
Basic earnings per share attributable to OpenText (in dollars per share)	$ 0.22	$ 0.08		$ 0.68	$ 3.91
Diluted earnings per share
Net income attributable to OpenText	$ 58,794	$ 21,616		$ 180,501	$ 979,522
Diluted earnings per share attributable to OpenText (in dollars per share)	$ 0.22	$ 0.08		$ 0.68	$ 3.88
Weighted-average number of shares outstanding
Basic (in shares)	266,572	263,329		265,619	250,538
Effect of dilutive securities (in shares)	1,192	2,111		1,335	1,931
Diluted (in shares)	267,764	265,440		266,954	252,469
Excluded as anti-dilutive (in shares)	2,102	1,117		2,690	1,577
Income tax benefit from reorganization			$ 876,100		$ 876,100

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Millions	9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Director, Stephen Sadler
Related Party Transaction [Line Items]
Consultancy fees for business acquisition-related activities	$ 0.8	$ 0.8

Subsequent Event (Details)

Subsequent Event (Details) - $ / shares	May 08, 2018	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Subsequent Event [Line Items]
Dividends declared per common share (in dollars per share)		$ 0.132000	$ 0.115000	$ 0.396	$ 0.345000
Subsequent Event
Subsequent Event [Line Items]
Dividends declared per common share (in dollars per share)	$ 0.1518